macleods pharmaceuticals limited - Medication Listings

The active ingredient in famciclovir tablets, USP is famciclovir, USP an orally administered prodrug of the antiviral agent penciclovir. Chemically, famciclovir,USP is known as 2-[2-(2-amino-9 H -purin-9-yl)ethyl]-1,3-propanediol diacetate. Its molecular formula is C 14 H 19 N 5 O 4 ; its molecular weight is 321.3. It is a synthetic acyclic guanine derivative and has the following structure: Famciclovir, USP is a white to pale yellow solid. It is freely soluble in acetone and methanol, and sparingly soluble in ethanol and isopropanol. At 25°C famciclovir, USP is freely soluble (greater than 25% w/v) in water initially, but rapidly precipitates as the sparingly soluble (2% to 3% w/v) monohydrate. Famciclovir, USP is not hygroscopic below 85% relative humidity. Partition coefficients are: octanol/water (pH 4.8) P=1.09 and octanol/phosphate buffer (pH 7.4) P=2.08. Famciclovir tablets,USP contain 125 mg, 250 mg, or 500 mg of famciclovir, USP together with the following inactive ingredients: hydroxypropyl cellulose, hypromellose, anhydrous lactose, magnesium stearate, polyethylene glycols, sodium starch glycolate and titanium dioxide. Meets USP Dissolution Test 2. 123

Febuxostat is a xanthine oxidase inhibitor. The active ingredient in febuxostat is 2-[3-cyano-4-(2-methylpropoxy) phenyl]-4-methylthiazole-5-carboxylic acid, with a molecular weight of 316.38. The empirical formula is C 16 H 16 N 2 O 3 S. The chemical structure is: Febuxostat is a non-hygroscopic, white crystalline powder that is freely soluble in dimethylformamide; soluble in dimethylsulfoxide; sparingly soluble in ethanol; slightly soluble in methanol and acetonitrile; and practically insoluble in water. The melting range is 205°C to 208°C. Febuxostat tablets for oral use contain the active ingredient, febuxostat, and are available in two dosage strengths, 40 mg and 80 mg. Inactive ingredients include: colloidal silicon dioxide, FD&C red #40/ allura red AC aluminum lake, FD&C yellow #5/tartrazine aluminum lake, FD&C Blue # 1/Brilliant Blue FCF Aluminum Lake (11-13%), hydroxypropyl cellulose, lactose monohydrate, macrogol, microcrystalline cellulose, Polyvinyl alcohol-part hydrolyzed, purified water, magnesium stearate, sodium croscarmellose, talc, titanium dioxide. febuxostat-structure

Fenofibrate tablets, USP are a peroxisome proliferator-activated receptor (PPAR) alpha agonist available as tablets for oral administration. Each tablet contains 48 mg or 145 mg of fenofibrate. The chemical name for fenofibrate is 2-[4-(4-chlorobenzoyl) phenoxy]-2-methyl-propanoic acid, 1-methylethyl ester with the following structural formula: The empirical formula is C 20 H 21 O 4 Cl and the molecular weight is 360.83; fenofibrate is insoluble in water. The melting point is 79 to 82oC. Fenofibrate USP is a white solid which is stable under ordinary conditions. Inactive Ingredients Each tablet contains hypromellose 2910, sodium lauryl sulfate, lecithin, sucrose, lactose monohydrate, silicified microcrystalline cellulose, crospovidone type-A, colloidal silicon dioxide and sodium stearyl fumarate. In addition, individual tablets contain: 48 mg tablets polyvinyl alcohol, titanium dioxide, talc, iron oxide yellow, lecithin (soya), xanthan gum. 145 mg tablets polyvinyl alcohol, titanium dioxide, talc, lecithin (soya), xanthan gum. 111

Fenofibric acid is a peroxisome proliferator-activated receptor (PPAR) alpha agonist available as delayed-release capsules for oral administration. Each delayed-release capsule contains choline fenofibrate, equivalent to 45 mg or 135 mg of fenofibric acid. The chemical name for choline fenofibrate is ethanaminium, 2- hydroxy-N,N,N-trimethyl, 2-{4-(4-chlorobenzoyl)phenoxy] -2-methylpropanoate (1:1) with the following structural formula: The molecular formula is C 22 H 28 ClNO 5 and the molecular weight is 421.91. Choline fenofibrate is freely soluble in water. The melting point is approximately 210°C. Choline fenofibrate is a white to yellow powder, which is stable under ordinary conditions. Each delayed-release capsule contains enteric coated mini-tablets comprised of choline fenofibrate and the following inactive ingredients: colloidal silicon dioxide, hydroxypropyl methyl cellulose, methacrylic acid copolymer, microcrystalline cellulose, povidone, sodium stearyl fumarate, talc and triethyl citrate. The capsule shell of the 45 mg capsule contains the following inactive ingredients: gelatin, iron oxide black, iron oxide red, iron oxide yellow, sodium lauryl sulfate and titanium dioxide. The capsule shell of the 135 mg capsule contains the following inactive ingredients: FD&C Blue #2, iron oxide yellow, sodium lauryl sulfate and gelatin, titanium dioxide. 111

Fluocinonide Topical Solution USP, 0.05% is intended for topical administration. The active component is the corticosteroid fluocinonide, which is the 21-acetate ester of fluocinolone acetonide and has the chemical name pregna-1,4-diene-3,20-dione,21-(acetyloxy)-6,9-difluoro-11-hydroxy-16,17-[(1-methylethylidene)bis(oxy)]-,(6α, 11β, 16α)-. It has the following chemical structure: Fluocinonide topical solution USP, 0.05% contains fluocinonide 0.5 mg/mL in a solution of citric acid, ethyl alcohol (35%), diisopropyl adipate, propylene glycol and purified water. In this formulation, the active ingredient is totally in solution. fluocinonide

Hydralazine hydrochloride USP, is an antihypertensive, available as 10-, 25-, 50-, and 100-mg tablets for oral administration. Its chemical name is 1-hydrazinophthalazine monohydrochloride, and its structural formula is: Hydralazine hydrochloride USP is a white to off-white, odorless crystalline powder. It is soluble in water, slightly soluble in alcohol, and very slightly soluble in ether. It melts at about 275°C, with decomposition, and has a molecular weight of 196.64. Inactive Ingredients. FD&C Yellow No. 6 Aluminium Lake, Lactose Monohydrate, Microcrystalline Cellulose, Povidone, Sodium Starch Glycolate and Stearic Acid 136

Ibandronate sodium is a nitrogen-containing bisphosphonate that inhibits osteoclast-mediated bone resorption. The chemical name for ibandronate sodium is 3-( N -methyl- N -pentyl) amino-1-hydroxypropane-1,1diphosphonic acid, monosodium salt, monohydrate with the molecular formula C 9 H 22 NO 7 P 2 Na•H 2 O and a molecular weight of 359.24. Ibandronate sodium is a white-to off-white powder. It is freely soluble in water and practically insoluble in organic solvents. Ibandronate sodium has the following structural formula: Ibandronate sodium is available as a white to off white, oblong, biconvex, 150 mg film-coated tablet for once-monthly oral administration. One 150 mg film-coated tablet contains 168.75 mg ibandronate monosodium monohydrate, equivalent to 150 mg free acid. Ibandronate sodium tablets also contain the following inactive ingredients: lactose monohydrate, povidone, microcrystalline cellulose, crospovidone, magnesium stearate, and colloidal silicon dioxide. The tablet film coating contains hypromellose, titanium dioxide, talc, and polyethylene glycol. 234

Irbesartan USP is an angiotensin II receptor (AT 1 subtype) antagonist. Irbesartan USP is a non-peptide compound, chemically described as a 2-butyl-3-[ p -( o -1 H -tetrazol-5-ylphenyl)benzyl]-1,3-diazaspiro[4.4]non-1-en-4-one. Its molecular formula is C 25 H 28 N 6 O, and the structural formula: Irbesartan USP is a white to off-white crystalline powder with a molecular weight of 428.5. It is a nonpolar compound with a partition coefficient (octanol/water) of 10.1 at pH of 7.4. Irbesartan USP is slightly soluble in alcohol and methylene chloride and practically insoluble in water. Irbesartan is available for oral administration in unscored film-coated tablets containing 75 mg, 150 mg, or 300 mg of irbesartan USP. Inactive ingredients include: carboxymethylcellulose calcium, povidone, colloidal silicon dioxide, sodium starch glycolate, talc and magnesium stearate. The film coating comprises of hypromellose, lactose monohydrate, titanium dioxide and polyethylene glycol. irbesartan

Irbesartan and hydrochlorothiazide tablets USP are a combination of an angiotensin II receptor antagonist (AT 1 subtype), irbesartan, and a thiazide diuretic, hydrochlorothiazide (HCTZ). Irbesartan USP is a non-peptide compound, chemically described as a 2-butyl-3-[p-(o-1H-tetrazol-5-ylphenyl)benzyl]-1,3-diazaspiro[4.4]non-1-en-4-one. Its empirical formula is C 25 H 28 N 6 O, and its structural formula is: Irbesartan is a white to off-white crystalline powder with a molecular weight of 428.5. It is a nonpolar compound with a partition coefficient (octanol/water) of 10.1 at pH of 7.4. Irbesartan is slightly soluble in alcohol and methylene chloride and practically insoluble in water. Hydrochlorothiazide USP is 6-chloro-3,4-dihydro-2H-1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide. Its empirical formula is C 7 H 8 ClN 3 O 4 S 2 and its structural formula is: Hydrochlorothiazide is a white, or practically white, crystalline powder with a molecular weight of 297.7. Hydrochlorothiazide is slightly soluble in water and freely soluble in sodium hydroxide solution. Irbesartan and hydrochlorothiazide tablets, USP are available for oral administration in film-coated tablets containing either 150 mg or 300 mg of irbesartan combined with 12.5 mg of hydrochlorothiazide. All dosage strengths contain the following inactive ingredients: carboxymethylcellulose calcium, sodium starch glycolate, talc, povidone, colloidal silicon dioxide, and magnesium stearate. The 300/12.5 and 150/12.5 mg peach film-coated tablets contain ferric oxide red, ferric oxide yellow, hypromellose-2910, PEG-3000, titanium dioxide and lactose monohydrate. irbesartan hctz

Labetalol Hydrochloride Tablets contain labetalol hydrochloride, an adrenergic receptor blocking agent that has both selective alpha1 adrenergic and nonselective beta adrenergic receptor blocking actions in a single substance. Labetalol hydrochloride is a racemate chemically designated as 2-hydroxy-5-[1-hydroxy-2-[(1¬methyl-3-phenylpropyl)amino]ethyl]benzamide monohydrochloride, and it has the following structural formula: Labetalol hydrochloride has the empirical formula C 19 H 24 N 2 O 3 •HCl and a molecular weight of 364.9. It has two asymmetric centers and therefore exists as a molecular complex of two diastereoisomeric pairs. Dilevalol, the R,R' stereoisomer, makes up 25% of racemic labetalol. Labetalol hydrochloride is a white or off white crystalline powder, soluble in water. Labetalol Hydrochloride Tablets contain 100 mg, 200 mg, or 300 mg of labetalol hydrochloride and are for oral administration. The tablets also contain the inactive ingredients ingredients lactose monohydrate, corn starch, colloidal silicon dioxide, magnesium stearate, sodium starch glycolate, hypromellose, titanium dioxide, macrogol and polysorbate 80. FDA approved dissolution test specifications differ from USP. 111

The chemical name of lacosamide, the single (R)-enantiomer, is (R)-2-acetamido-N-benzyl-3-methoxypropionamide (IUPAC). Lacosamide is a functionalized amino acid. Its molecular formula is C 13 H 18 N 2 O 3 and its molecular weight is 250.30. The chemical structure is: Lacosamide is a white to light yellow powder. It is sparingly soluble in water and slightly soluble in acetonitrile and ethanol. 11.1 Lacosamide Tablets Lacosamide tablets, USP for oral administration contain lacosamide and the following inactive ingredients: colloidal silicon dioxide, crospovidone, hydroxypropyl cellulose, low substituted hydroxypropyl cellulose, hypromellose, lecithin, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polyvinyl alcohol, talc, titanium dioxide and dye pigments as specified below: Lacosamide tablets, USP are supplied as debossed tablets and contain the following coloring agents: 50 mg tablets: red iron oxide, black iron oxide, FD&C Blue #2/indigo carmine aluminum lake 100 mg tablets: yellow iron oxide 150 mg tablets: yellow iron oxide, red iron oxide, black iron oxide 200 mg tablets: FD&C Blue #2/indigo carmine aluminum lake 111

Lamivudine USP is a synthetic nucleoside analogue with activity against HIV-1 and HBV. The chemical name of lamivudine USP is (2R,cis)-4-amino-1-(2-hydroxymethyl-1,3-oxathiolan-5-yl)-(1H)-pyrimidin-2-one. Lamivudine USP is the (-)enantiomer of a dideoxy analogue of cytidine. Lamivudine USP has also been referred to as (-)2′,3′-dideoxy, 3′-thiacytidine. It has a molecular formula of C 8 H 11 N 3 O 3 S and a molecular weight of 229.3 g per mol. It has the following structural formula: Lamivudine USP is a white to off-white crystalline solid with a solubility of approximately 70 mg per mL in water at 20°C. Lamivudine tablets, USP are for oral administration. Each scored 150-mg film-coated tablet contains 150 mg of lamivudine USP and the inactive ingredients hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polysorbate 80, sodium starch glycolate, and titanium dioxide. Each 300-mg film-coated tablet contains 300 mg of lamivudine USP and the inactive ingredients black iron oxide, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polysorbate 80, sodium starch glycolate, and titanium dioxide. str

Lamivudine and zidovudine tablets, USP are combination tablets containing lamivudine and zidovudine. Lamivudine and zidovudine (azidothymidine, AZT, or ZDV) are synthetic nucleoside analogues with activity against HIV-1. Lamivudine and zidovudine tablets, USP are for oral administration. Each film-coated tablet contains 150 mg of lamivudine, 300 mg of zidovudine, and the inactive ingredients colloidal silicon dioxide, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polysorbate 80, sodium starch glycolate, and titanium dioxide. Lamivudine The chemical name of lamivudine is (2R,cis)-4-amino-1-(2-hydroxymethyl-1,3-oxathiolan-5-yl)-(1H)-pyrimidin-2-one. Lamivudine is the (-)enantiomer of a dideoxy analogue of cytidine. Lamivudine has also been referred to as (-)2´,3´-dideoxy,3´-thiacytidine. It has a molecular formula of C 8 H 11 N 3 O 3 S and a molecular weight of 229.3 g per mol. It has the following structural formula: Lamivudine is a white to off-white crystalline solid and is soluble in water. Zidovudine The chemical name of zidovudine is 3′-azido-3′-deoxythymidine. It has a molecular formula of C 10 H 13 N 5 O 4 and a molecular weight of 267.24 g per mol. It has the following structural formula: Zidovudine is a white to beige, odorless, crystalline solid with a solubility of 20.1 mg per mL in water at 25°C. Meets USP Dissolution Test 2. lami zido

The active ingredient in Lansoprazole Delayed-Release Capsules is lansoprazole, a substituted benzimidazole, 2-[[[3-methyl-4-(2,2,2-trifluoroethoxy)-2-pyridyl] methyl] sulfinyl] benzimidazole, a compound that inhibits gastric acid secretion. Its empirical formula is C 16 H 14 F 3 N 3 O 2 S with a molecular weight of 369.37. Lansoprazole has the following structure: Lansoprazole is a white to brownish-white odorless crystalline powder which melts with decomposition at approximately 166°C. Lansoprazole is freely soluble in dimethylformamide; soluble in methanol; sparingly soluble in ethanol; slightly soluble in ethyl acetate, dichloromethane and acetonitrile; very slightly soluble in ether; and practically insoluble in hexane and water. Lansoprazole is stable when exposed to light for up to two months. The rate of degradation of the compound in aqueous solution increases with decreasing pH. The degradation half-life of the drug substance in aqueous solution at 25°C is approximately 0.5 hour at pH 5.0 and approximately 18 hours at pH 7.0. Lansoprazole is supplied in delayed-release capsules for oral administration. Lansoprazole delayed-release capsules are available in two dosage strengths: 15 and 30 mg of lansoprazole per capsule. Each delayed-release capsule contains enteric-coated granules consisting of 15 or 30 mg of lansoprazole (active ingredient) and the following inactive ingredients: sugar sphere, maize starch, ethylcellulose, hydroxypropyl methylcellulose, magnesium carbonate, low-substituted hydroxypropyl cellulose, talc, polyethylene glycol, methacrylic acid copolymer, titanium dioxide, polysorbate 80, colloidal silicon dioxide, FD & C blue 1, D & C red 28, FD & C red 40, gelatin, FD & C green 31 1 Lansoprazole 15-mg capsules only. FDA approved dissolution test specifications differ from USP. lansoprazole-structure

Levocetirizine dihydrochloride, USP the active component of levocetirizine dihydrochloride tablets, USP is an orally active H 1 -receptor antagonist. The chemical name is (R)-[2-[4-[(4-chlorophenyl) phenylmethyl]-1-piperazinyl] ethoxy] acetic acid dihydrochloride. Levocetirizine dihydrochloride USP is the R enantiomer of cetirizine hydrochloride, a racemic compound with antihistaminic properties. The empirical formula of levocetirizine dihydrochloride, USP is C 21 H 25 ClN 2 O 3 •2HCl. The molecular weight is 461.82 and the chemical structure is shown below: Levocetirizine dihydrochloride, USP is a white, crystalline powder and is water soluble. Levocetirizine dihydrochloride 5 mg tablets are formulated as immediate release, white to off-white, biconvex, film-coated, oval-shaped scored tablets for oral administration. Inactive ingredients are: microcrystalline cellulose, croscarmellose sodium, lactose monohydrate, colloidal anhydrous silica, and magnesium stearate. The film coating contains hypromellose, titanium dioxide, and macrogol 400. str

Levofloxacin USP are synthetic antibacterial agents for oral administration. Chemically, levofloxacin, a chiral fluorinated carboxyquinolone, is the pure (-)-(S)-enantiomer of the racemic drug substance ofloxacin. The chemical name is (--(S)-9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid hemihydrate. Figure 1: The Chemical Structure of Levofloxacin The empirical formula is C 18 H 20 FN 3 O 4 •½ H 2 O and the molecular weight is 370.38. Levofloxacin USP is a light yellowish-white to yellow-white crystal or crystalline powder. The molecule exists as a zwitterion at the pH conditions in the small intestine. The data demonstrate that from pH 0.6 to 5.8, the solubility of levofloxacin, USP is essentially constant (approximately 100 mg/mL). Levofloxacin USP is considered soluble to freely soluble in this pH range, as defined by USP nomenclature. Above pH 5.8, the solubility increases rapidly to its maximum at pH 6.7 (272 mg/mL) and is considered freely soluble in this range. Above pH 6.7, the solubility decreases and reaches a minimum value (about 50 mg/mL) at a pH of approximately 6.9. Levofloxacin USP has the potential to form stable coordination compounds with many metal ions. This in vitro chelation potential has the following formation order: Al +3 >Cu +2 >Zn +2 >Mg +2 >Ca +2 . Levofloxacin USP is available as film-coated tablets and contain the following inactive ingredients: 250 mg (as expressed in the anhydrous form): hypromellose, crospovidone, microcrystalline cellulose, magnesium stearate, polyethylene glycol, titanium dioxide, polysorbate 80 and synthetic red iron oxide. 500 mg (as expressed in the anhydrous form): hypromellose, crospovidone, microcrystalline cellulose, magnesium stearate, polyethylene glycol, titanium dioxide, polysorbate 80 and synthetic red and yellow iron oxides. 750 mg (as expressed in the anhydrous form): hypromellose, crospovidone, microcrystalline cellulose, magnesium stearate, polyethylene glycol, titanium dioxide, polysorbate 80. USP dissolution test 4. levofloxacin-str.jpg

Lidocaine Ointment, USP 5% contains a local anesthetic agent and is administered topically. See INDICATIONS AND USAGE for specific uses. Lidocaine Ointment, USP 5% contains lidocaine USP, which is chemically designated as acetamide, 2-(diethylamino)-N-(2,6-dimethylphenyl)-, and has the following structural formula: Composition of Lidocaine Ointment, USP 5%: acetamide, 2-(diethylamino)-N-(2,6-dimethylphenyl)-, (lidocaine) 5% in a water miscible ointment vehicle containing polyethylene glycols. lidocaine-fig1

Linezolid Tablets, USP contain linezolid, which is a synthetic antibacterial agent of the oxazolidinone class. The chemical name for linezolid is (S)-N-[[3-[3-Fluoro-4-(4-morpholinyl)phenyl]-2-oxo-5-oxazolidinyl] methyl]-acetamide. The empirical formula is C 16 H 20 FN 3 O 4 . Its molecular weight is 337.35, and its chemical structure is represented below: Linezolid Tablets, USP for oral administration contains 600 mg linezolid as a film-coated compressed tablet. Inactive ingredients are corn starch, microcrystalline cellulose, silicon dioxide, hydroxypropylcellulose, sodium starch glycolate, magnesium stearate. The coating material contains hypromellose, polyethylene glycol and titanium dioxide. The sodium (Na+) content is 2.52 mg per 600 mg tablet (0.1 mEq/tablet). FDA approved dissolution test specifications differ from USP. 777

Lopinavir and ritonavir tablets is a co-formulation of lopinavir and ritonavir. Lopinavir is an inhibitor of the HIV-1 protease. As co-formulated in lopinavir and ritonavir, ritonavir inhibits the CYP3A-mediated metabolism of lopinavir, thereby providing increased plasma levels of lopinavir. Lopinavir, USP is chemically designated as [1S-[1R*,(R*), 3R*, 4R*]]-N-[4-[[(2,6dimethylphenoxy)acetyl]amino]-3-hydroxy-5-phenyl-1-(phenylmethyl)pentyl]tetrahydro-alpha(1-methylethyl)-2-oxo-1(2H)-pyrimidineacetamide. Its molecular formula is C37H48N4O5, and its molecular weight is 628.80. Lopinavir is a white to light tan powder. It is freely soluble in methanol and ethanol, soluble in isopropanol and practically insoluble in water. Lopinavir has the following structural formula: Ritonavir, USP is chemically designated as 10-hydroxy-2-methyl-5-(1-methylethyl)-1-[2-(1methylethyl)-4-thiazolyl]-3,6-dioxo-8,11-bis(phenylmethyl)-2,4,7,12-tetraazatridecan-13-oic acid, 5-thiazolylmethyl ester, [5S-(5R*,8R*,10R*,11R*)]. Its molecular formula is C37H48N6O5S2, and its molecular weight is 720.95. Ritonavir is a white to light tan powder. It is freely soluble in methanol and ethanol, soluble in isopropanol and practically insoluble in water. Ritonavir has the following structural formula: Lopinavir and ritonavir tablets, USP are available for oral administration in two strengths: Yellow tablets containing 200 mg of lopinavir and 50 mg of ritonavir Pale yellow tablets containing 100 mg of lopinavir and 25 mg of ritonavir. The yellow, 200 mg lopinavir and 50 mg ritonavir, tablets contain the following inactive ingredients: copovidone, sorbiton monolaurate, colloidal silicon dioxide, anhydrous dibasic calcium phosphate, sodium stearyl fumarate. The coating consists of titanium dioxide, polyethylene glycol 3350, talc, iron oxide yellow. The pale yellow, 100 mg lopinavir and 25 mg ritonavir, tablets contain the following inactive ingredients: copovidone, sorbiton monolaurate, colloidal silicon dioxide, anhydrous dibasic calcium phosphate, sodium stearyl fumarate. The coating consists of titanium dioxide, polyethylene glycol 3350, talc, iron oxide yellow. str-rito str-lopi

Losartan potassium and hydrochlorothiazide tablets, USP 50/12.5, losartan potassium and hydrochlorothiazide tablets, USP 100/12.5 and losartan potassium and hydrochlorothiazide tablets, USP 100/25 combine an angiotensin II receptor blocker acting on the AT1 receptor subtype and a diuretic, hydrochlorothiazide USP. Losartan potassium USP, a non-peptide molecule, is chemically described as 2-butyl-4-chloro-1-[p-(o-1H-tetrazol-5-ylphenyl)benzyl]imidazole-5-methanol monopotassium salt. Its molecular formula is C 22 H 22 ClKN 6 O, and its structural formula is: Losartan potassium USP is a white to off-white free-flowing crystalline powder with a molecular weight of 461.01. It is freely soluble in water, soluble in alcohols, and slightly soluble in common organic solvents, such as acetonitrile and methyl ethyl ketone. Oxidation of the 5-hydroxymethyl group on the imidazole ring results in the active metabolite of losartan. Hydrochlorothiazide USP is 6-chloro-3,4-dihydro-2H-1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide. Its molecular formula is C 7 H 8 ClN 3 O 4 S 2 and its structural formula is: Hydrochlorothiazide USP is a white, or practically white, crystalline powder with a molecular weight of 297.74, which is slightly soluble in water, but freely soluble in sodium hydroxide solution. Losartan potassium and hydrochlorothiazide tablets are available for oral administration in three tablet combinations of losartan and hydrochlorothiazide. Losartan potassium and hydrochlorothiazide tablets, USP 50/12.5 contains 50 mg of losartan potassium USP and 12.5 mg of hydrochlorothiazide USP. Losartan potassium and hydrochlorothiazide tablets, USP 100/12.5 contains 100 mg of losartan potassium USP and 12.5 mg of hydrochlorothiazide USP. Losartan potassium and hydrochlorothiazide tablets, USP 100/25 contains 100 mg of losartan potassium USP and 25 mg of hydrochlorothiazide USP. Inactive ingredients are microcrystalline cellulose, lactose monohydrate, pregelatinized starch, colloidal silicon dioxide, magnesium stearate, hydroxypropyl cellulose, hypromellose, and titanium dioxide. Losartan potassium and hydrochlorothiazide tablets, USP 50/12.5 and losartan potassium and hydrochlorothiazide tablets, USP 100/25 also contain yellow ferric oxide. Losartan potassium and hydrochlorothiazide tablets, USP 50/12.5 contains 4.24 mg (0.108 mEq) of potassium, losartan potassium and hydrochlorothiazide tablets, USP 100/12.5 contains 8.48 mg (0.216 mEq) of potassium, and losartan potassium and hydrochlorothiazide tablets, USP 100/25 contains 8.48 mg (0.216 mEq) of potassium. Losartan potassium Hydrochlorothiazide

Lurasidone hydrochloride is an atypical antipsychotic belonging to the chemical class of benzisothiazol derivatives. Its chemical name is (3a R , 4S, 7R, 7aS)-2-{(1 R , 2R)-2-[4-(1,2-benzisothiazol-3-yl)piperazin-1yl-methyl] cyclohexylmethyl}hexahydro-4,7-methano-2H-isoindole-1,3-dione hydrochloride. Its molecular formula is C 28 H 36 N 4 O 2 S•HCl and its molecular weight is 529.14. The chemical structure is: Lurasidone hydrochloride is a white to off-white powder. It is very slightly soluble in water, practically insoluble or insoluble in 0.1 N HCl, slightly soluble in ethanol, sparingly soluble in methanol, practically insoluble or insoluble in toluene and very slightly soluble in acetone. Lurasidone hydrochloride tablets are intended for oral administration only. Each tablet contains 20 mg, 40 mg, 60 mg, 80 mg, or 120 mg of lurasidone hydrochloride. Inactive ingredients are mannitol, pregelatinized starch, croscarmellose sodium, hypromellose, magnesium stearate. The film-coating consists of polyethylene glycol, titanium dioxide and yellow iron oxide (80 mg only). 115

Memantine and donepezil hydrochlorides extended-release capsules contain memantine, an orally active NMDA receptor antagonist, as the hydrochloride salt and donepezil, a reversible inhibitor of the enzyme acetylcholinesterase, as the hydrochloride salt. Memantine Hydrochloride The chemical name for memantine hydrochloride is 1-amino-3,5-dimethyladamantane hydrochloride with the following structural formula: The molecular formula is C 12 H 21 N•HCl and the molecular weight is 215.76. Memantine hydrochloride occurs as a fine white to off-white powder. Donepezil Hydrochloride The chemical name for donepezil hydrochloride is 2,3-dihydro-5,6-dimethoxy-2-[[1-(phenylmethyl)-4-piperidinyl]methyl]-1H-inden-1-one hydrochloride. The molecular formula is C 24 H 29 NO 3 •HCl and the molecular weight is 415.96. Donepezil hydrochloride is a white crystalline powder. Memantine and donepezil hydrochlorides extended-release capsules Memantine and donepezil hydrochlorides extended-release capsules for oral administration, containing 14 mg memantine hydrochloride extended-release and 10 mg donepezil hydrochloride (14 mg/10 mg) or 28 mg memantine hydrochloride extended-release and 10 mg donepezil hydrochloride (28 mg/10 mg). All doses of memantine and donepezil hydrochlorides extended-release capsules contain the following inactive ingredients: colloidal silicon dioxide, ethyl cellulose, hydroxypropylmethyl cellulose, lactose monohydrate, microcrystalline cellulose, sugar sphere, talc. The hard gelatin capsules contain gelatin, sodium lauryl sulfate and titanium dioxide; colorants are iron oxide red (28 mg/10 mg). The black ink contains black iron oxide, propylene glycol and shellac. str str

Memantine hydrochloride USP is an orally active NMDA receptor antagonist. The chemical name for memantine hydrochloride is 1-amino-3,5-dimethyladamantane hydrochloride with the following structural formula: The molecular formula is C 12 H 21 N•HCl and the molecular weight is 215.76. Memantine hydrochloride occurs as a fine white to off-white powder and is soluble in water. Memantine hydrochloride extended-release capsules are supplied for oral administration as 7 mg, 14 mg, 21 mg, and 28 mg capsules. Each capsule contains extended-release beads with the labeled amount of memantine hydrochloride USP and the following inactive ingredients: ethylcellulose, hydroxylpropylmethyl cellullose, sugar spheres and talc. Sugar spheres consist of sucrose and corn starch. Capsule shell consists of gelatin, sodium lauryl Sulphate, titanium dioxide with iron oxide yellow and FD & C blue no. 2 as colors. The capsules are imprinted with black ink and white ink. The inks consist of shellac, potassium hydroxide, titanium dioxide (only in white ink) and black iron oxide (only in black ink). 145

Memantine hydrochloride USP is an orally active NMDA receptor antagonist. The chemical name for memantine hydrochloride USP is 1-amino-3,5-dimethyladamantane hydrochloride with the following structural formula: The molecular formula is C 12 H 21 N•HCl and the molecular weight is 215.76. Memantine hydrochloride occurs as a fine white to off-white powder and is soluble in water. Memantine hydrochloride USP is for oral administration as capsule-shaped, film-coated tablets containing 5 mg and 10 mg of memantine hydrochloride. The tablets also contain the following inactive ingredients: microcrystalline cellulose/colloidal silicon dioxide, talc, croscarmellose sodium, and magnesium stearate. In addition the following inactive ingredients are also present as components of the film coat: hypromellose, titanium dioxide, polyethylene glycol 400, FD&C yellow #6 and FD&C blue #2 (5 mg tablets), and hypromellose, titanium dioxide, macrogol/polyethylene glycol 400 and iron oxide black (10 mg tablets). figure1

Memantine hydrochloride, USP is an orally active NMDA receptor antagonist. The chemical name for memantine hydrochloride is 1-amino-3,5-dimethyladamantane hydrochloride with the following structural formula: The molecular formula is C 12 H 21 N•HCl and the molecular weight is 215.76. Memantine HCl occurs as a fine white to off-white powder and is soluble in water. Memantine hydrochloride oral solution contains memantine hydrochloride in a strength equivalent to 2 mg of memantine hydrochloride in each mL. The oral solution also contains the following inactive ingredients: sorbitol solution (70%), methyl paraben, propylparaben, propylene glycol, glycerin, natural peppermint flavor #104, citric acid, sodium citrate, and purified water. structure

Methimazole (1-methylimidazole-2-thiol) is a white, crystalline substance that is freely soluble in water. It differs chemically from the drugs of the thiouracil series primarily because it has a 5-instead of a 6-membered ring. Methimazole tablet, USP contains 5 mg or 10 mg (43.8 or 87.6 μmol) methimazole, an orally administered antithyroid drug. Each tablet also contains lactose monohydrate, pregelatinised starch, talc, and magnesium stearate. The molecular weight is 114.17, and the molecular formula is C 4 H 6 N 2 S.The structural formula is as follows: str

The chemical name for the active ingredient in nebivolol tablets (nebivolol) tablets is (1RS,1’RS)-1,1’-[(2RS,2’SR)bis(6-fluoro-3,4-dihydro-2H-1-benzopyran-2-yl)]-2,2’-iminodiethanol hydrochloride. Nebivolol is a racemate composed of d-Nebivolol and l-Nebivolol with the stereochemical designations of [SRRR]-nebivolol and [RSSS]-nebivolol, respectively. Nebivolol’s molecular formula is (C 22 H 25 F 2 NO 4 •HCl) with the following structural formula: Nebivolol hydrochloride is a white to almost white powder that is soluble in methanol, dimethylsulfoxide, and N,N-dimethylformamide, sparingly soluble in ethanol, propylene glycol, and polyethylene glycol, and very slightly soluble in hexane, dichloromethane, and methylbenzene. NEBIVOLOL as tablets for oral administration contains nebivolol hydrochloride equivalent to 2.5, 5, 10, and 20 mg of nebivolol base. In addition, nebivolol tablets contains the following inactive ingredients: colloidal silicon dioxide, croscarmellose sodium, D & C Red #27 Lake, FD & C Blue #2 Lake, FD & C Yellow #6 Lake, hydroxypropyl methyl cellulose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polysorbate 80, pregelatinized starch. str-1 str-2

Nevirapine Tablets USP is the brand name for nevirapine, a non-nucleoside reverse transcriptase inhibitor (NNRTI) with activity against Human Immunodeficiency Virus Type 1 (HIV-1). Nevirapine is structurally a member of the dipyridodiazepinone chemical class of compounds. The chemical name of nevirapine is 11-cyclopropyl-5,11-dihydro-4-methyl-6H-dipyrido [3,2-b:2',3'-e][1,4] diazepin-6-one. Nevirapine is a white to off-white crystalline powder with the molecular weight of 266.30 and the molecular formula C 15 H 14 N 4 O. Nevirapine has the following structural formula: Nevirapine Tablets, USP are for oral administration. Each tablet contains 200 mg of nevirapine and the inactive ingredients microcrystalline cellulose, lactose monohydrate, povidone, sodium starch glycolate, colloidal silicon dioxide and magnesium stearate str

Nevirapine is a non-nucleoside reverse transcriptase inhibitor (NNRTI) with activity against Human Immunodeficiency Virus Type 1 (HIV-1). Nevirapine is structurally a member of the dipyridodiazepinone chemical class of compounds. The chemical name of nevirapine is 11-cyclopropyl-5, 11-dihydro-4-methyl-6H-dipyrido [3,2-b:2',3'-e][1,4] diazepin-6-one. Nevirapine is a white to off-white crystalline powder with the molecular weight of 266.30 and the molecular formula C 15 H 14 N 4 O. Nevirapine has the following structural formula: Nevirapine extended-release tablets, USP are for oral administration. Each tablet contains 400 mg of nevirapine USP and the inactive ingredients lactose monohydrate, hypromellose, ferric oxide, povidone and magnesium stearate. str

Niacin extended-release tablet, USP contains niacin, which at therapeutic doses is an antihyperlipidemic agent. Niacin (nicotinic acid, or 3-pyridinecarboxylic acid) is a white, crystalline powder, very soluble in water, with the following structural formula: Niacin extended-release tablet, USP are unscored, orange, film- coated tablets for oral administration and is available in two tablet strengths containing 500 and 1000 mg niacin. Niacin extended-release tablets, USP also contain the inactive ingredients hypromellose, povidone, stearic acid, and polyethylene glycol, and the following coloring agents: FD&C yellow #6/sunset yellow FCF Aluminum Lake, synthetic red and yellow iron oxides, and titanium dioxide. FDA approved dissolution test specifications differ from USP. niacin-api-str

Nystatin is a polyene antifungal antibiotic obtained from Streptomyces nursei . Nystatin cream is for dermatologic use. Nystatin cream for topical use, contains 100,000 USP Nystatin Units in an aqueous cream base containing aluminium hydroxide, ceteareth-15, polyethylene glycol monostearate, glycerol monostearate, propylene glycol, purified water, simethicone emulsion, non-crystallizing sorbitol solution, titanium dioxide, white petrolatum with methyl paraben and propyl paraben as preservatives. 555

Nystatin is a polyene antifungal antibiotic drug obtained from Streptomyces nursei Nystatin Ointment USP, for topical use only, contains 100,000 USP Nystatin Units per gram, in an ointment base of light mineral oil and white petrolatum. The structural formula is as follows: Molecular Weight 926.13 Molecular Formula C 47 H 75 NO 17 structure.jpg

Nystatin and Triamcinolone Acetonide Ointment, USP for dermatologic use contain the antifungal agent nystatin and the synthetic corticosteroid triamcinolone acetonide. Nystatin, USP is a polyene antimycotic obtained from Streptomyces noursei. It is a yellow to light tan powder, Freely soluble in dimethylformamide and in dimethyl sulfoxide; very slightly soluble in methanol; practically insoluble or insoluble in water, in alcohol, in n-propyl alcohol, in n-butyl alcohol, in chloroform and in ether. Structural formula: C 47 H 75 NO 17 MW= 926.13 Triamcinolone acetonide, USP is designated chemically as 9-fluoro-11β, 16α, 17, 21- tetrahydroxypregna-1, 4-diene-3, 20-dione cyclic 16, 17-acetal with acetone. The white to cream crystalline powder has a slight odor, Sparingly soluble in dehydrated alcohol, in chloroform and in methanol, Practically insoluble in water. Structural formula: C 24 H 31 FO 6 MW= 434.50 Nystatin and Triamcinolone Acetonide Ointment USP, is a yellowish translucent ointment, Each gram of Nystatin and Triamcinolone Acetonide Ointment provides 100,000 USP Nystatin units and 1 mg Triamcinolone Acetonide USP in an ointment base of mineral oil and white petrolatum. structure-nystatin structure-triamcinolone

Nystatin and triamcinolone acetonide cream, USP for dermatologic use contain the antifungal agent nystatin and the synthetic corticosteroid triamcinolone acetonide. Nystatin, USP is a polyene antimycotic obtained from Streptomyces noursei. It is a yellow to light tan powder, Freely soluble in dimethylformamide and in dimethyl sulfoxide; very slightly soluble in methanol; practically insoluble or insoluble in water, in alcohol, in n-propyl alcohol, in n-butyl alcohol, in chloroform and in ether. Structural formula: C 47 H 75 NO 17 MW= 926.13 Triamcinolone acetonide, USP is designated chemically as 9-fluoro-11β, 16α, 17, 21- tetrahydroxypregna-1, 4-diene-3, 20-dione cyclic 16, 17-acetal with acetone. The white to cream crystalline powder has a slight odor, Sparingly soluble in dehydrated alcohol, in chloroform and in methanol, Practically insoluble in water. Structural formula: C 24 H 31 FO 6 MW= 434.50 Nystatin and triamcinolone acetonide cream, USP is a soft, smooth, light yellow to buff colored cream. Each gram provides 100,000 USP Nystatin units and 1 mg Triamcinolone Acetonide USP in a cream base with aluminium hydroxide, ceteareth 15, glyceryl monostearate, methyl paraben, non-crystallizing sorbitol solution, polysorbate 60, polyethylene glycol 400 monostearate, propylene glycol, propyl paraben, simethicone emulsion, sorbic acid, titanium dioxide white petrolatum, purified water. nystatin structure triam structure

Olanzapine USP is an atypical antipsychotic that belongs to the thienobenzodiazepine class. The chemical designation is 2-methyl-4-(4-methyl-1-piperazinyl)-10H-thieno[2,3-b] [1,5]benzodiazepine. The molecular formula is C17H20N4S, which corresponds to a molecular weight of 312.44. The chemical structure is: Olanzapine USP is a yellow crystalline solid, which is practically insoluble in water. Olanzapine tablets, USP are intended for oral administration only. Each tablet contains olanzapine equivalent to 2.5 mg (8 μmol), 5 mg (16 μmol), 7.5 mg (24 μmol), 10 mg (32 μmol), 15 mg (48 μmol), or 20 mg (64 μmol). Inactive ingredients are crospovidone, hydroxypropyl cellulose, magnesium stearate, microcrystalline cellulose. The color coating contains Titanium Dioxide (all strengths), FD&C Blue No. 2 indigo carmine Aluminum Lake (15 mg), or Synthetic Red Iron Oxide (20 mg). 138

Olanzapine USP is an atypical antipsychotic that belongs to the thienobenzodiazepine class. The chemical designation is 2-methyl-4-(4-methyl-1-piperazinyl)-10 H -thieno[2,3- b ] [1,5]benzodiazepine. The molecular formula is C 17 H 20 N 4 S, which corresponds to a molecular weight of 312.44. The chemical structure is: Olanzapine USP is a yellow crystalline solid, which is practically insoluble in water. Olanzapine orally disintegrating tablets, USP are intended for oral administration only. Each orally disintegrating tablet contains olanzapine equivalent to 5 mg (16 μmol), 10 mg (32 μmol), 15 mg (48 μmol) or 20 mg (64 μmol). It begins disintegrating in the mouth within seconds, allowing its contents to be subsequently swallowed with or without liquid. Olanzapine orally disintegrating tablets, USP also contains the following inactive ingredients: aspartame, microcrystalline cellulose, low substituted hydroxypropyl cellulose, crospovidone and magnesium stearate. The drug product meets USP Disintegration Test 2. olanzapine-odt-structure

Olmesartan medoxomil, a prodrug, is hydrolyzed to olmesartan during absorption from the gastrointestinal tract. Olmesartan is a selective AT 1 subtype angiotensin II receptor antagonist. Olmesartan medoxomil is described chemically as 2,3-dihydroxy-2-butenyl 4-(1-hydroxy-1-methylethyl)-2-propyl-1-[ p -(o-1H-tetrazol-5-ylphenyl)benzyl]imidazole=-5-carboxylate, cyclic 2,3-carbonate. Its molecular formula is C 29 H 30 N 6 O 6 and its structural formula is: Olmesartan medoxomil is a white to light yellowish-white powder or crystalline powder with a molecular weight of 558.59. It is practically insoluble in water and sparingly soluble in methanol. Olmesartan medoxomil tablets are available for oral use as film-coated tablets containing 5 mg, 20 mg, or 40 mg of olmesartan medoxomil and the following inactive ingredients: lactose monohydrate, microcrystalline cellulose, sodium starch glycolate, hydroxypropyl cellulose, colloidal silicon dioxide, magnesium stearate, hypromellose, talc, titanium dioxide and iron oxide yellow (5 mg only). Olmesartan medoxomil structure

Olmesartan medoxomil, amlodipine and hydrochlorothiazide tablets USP, provided as a tablet for oral administration, is a fixed combination of olmesartan medoxomil (ARB), amlodipine (CCB), and hydrochlorothiazide (thiazide diuretic). Olmesartan medoxomil, a prodrug, is hydrolyzed to olmesartan during absorption from the gastrointestinal tract. The olmesartan medoxomil USP component of olmesartan medoxomil, amlodipine and hydrochlorothiazide tablets is chemically described as 2,3-dihydroxy-2-butenyl 4-(1-hydroxy-1-methylethyl)-2-propyl-1-[p-(o-1H-tetrazol-5-ylphenyl)benzyl]imidazole-5-carboxylate, cyclic 2,3-carbonate. Its empirical formula is C 29 H 30 N 6 O 6 . The amlodipine besylate USP component of olmesartan medoxomil, amlodipine and hydrochlorothiazide tablets is chemically described as 3-ethyl-5methyl (±)-2-[(2-aminoethoxy)methyl]-4-(2-chlorophenyl)-1,4-dihydro-6-methyl-3,5-pyridinedicarboxylate, monobenzenesulphonate. Its empirical formula is C 20 H 25 CIN 2 O 5 •C 6 H 6 O 3 S. The hydrochlorothiazide USP component of olmesartan medoxomil, amlodipine and hydrochlorothiazide tablets is chemically described as 6-chloro-3,4-dihydro-2H-1,2,4-benzo-thiazidiazine-7-sulfonamide 1,1 dioxide. Its empirical formula is C 7 H 8 CIN 3 O 4 S 2 . The structural formula for olmesartan medoxomil is: The structural formula for amlodipine besylate is: The structural formula for hydrochlorothiazide is: Olmesartan medoxomil, amlodipine and hydrochlorothiazide tablets contains olmesartan medoxomil USP, a white to light yellowish-white powder or crystalline powder, amlodipine besylate USP, a white to off-white crystalline powder, and hydrochlorothiazide USP, a white or practically white, crystalline powder. The molecular weights of olmesartan medoxomil, amlodipine besylate, and hydrochlorothiazide are 558.6, 567.1, and 297.7, respectively. Olmesartan medoxomil is practically insoluble in water and sparingly soluble in methanol. Amlodipine besylate is slightly soluble in water and sparingly soluble in ethanol. Hydrochlorothiazide is slightly soluble in water but freely soluble in sodium hydroxide solution. Each tablet of Olmesartan medoxomil, amlodipine and hydrochlorothiazide tablets also contains the following inactive ingredients: microcrystalline cellulose, pregelatinized starch, croscarmellose sodium, and magnesium stearate. The color coating contains polyvinyl alcohol, macrogol/polyethylene glycol 3350, titanium dioxide, talc, iron oxide yellow (20 /5 /12.5 mg, 40 /5 /12.5 mg, 40 /5 /25 mg, 40 /10 /12.5 mg, and 40 /10 /25 mg tablets), iron oxide red (20 /5 /12.5 mg, 40 /10 /12.5 mg, and 40 /10 /25 mg tablets), and iron oxide black (20 /5 /12.5 mg tablets). olme-medo-amlo-hctz-str-1.jpg olme-medo-amlo-hctz-str-2.jpg olme-medo-amlo-hctz-str-3.jpg

Olmesartan medoxomil and hydrochlorothiazide tablets are a combination of an angiotensin II receptor antagonist (AT 1 subtype), olmesartan medoxomil, USP and a thiazide diuretic, hydrochlorothiazide (HCTZ), USP. Olmesartan medoxomil is 2,3-dihydroxy-2-butenyl 4-(1-hydroxy-1-methylethyl)-2-propyl-1-[p-(o-1H-tetrazol-5-ylphenyl)benzyl]imidazole-5-carboxylate, cyclic 2,3-carbonate. Its molecular formula is C 29 H 30 N 6 O 6 and its structural formula is: Olmesartan medoxomil, USP is a white to light yellowish-white powder or crystalline powder with a molecular weight of 558.6. It is practically insoluble in water and sparingly soluble in methanol. Hydrochlorothiazide, USP is 6-chloro-3,4-dihydro-2H-1,2,4-benzo-thiadiazine-7-sulfonamide 1,1-dioxide. Its molecular formula is C 7 H 8 ClN 3 O 4 S 2 and its structural formula is: Hydrochlorothiazide, USP is a white, or practically white, crystalline powder with a molecular weight of 297.7. Hydrochlorothiazide, USP is slightly soluble in water but freely soluble in sodium hydroxide solution. Olmesartan medoxomil and hydrochlorothiazide tablets are available for oral administration in tablets containing 20 mg or 40 mg of olmesartan medoxomil, USP combined with 12.5 mg of hydrochlorothiazide, USP or 40 mg of olmesartan medoxomil, USP combined with 25 mg of hydrochlorothiazide, USP. Inactive ingredients include: Lactose monohydrate, microcrystalline cellulose, sodium starch glycolate, hydroxypropyl cellulose, colloidal silicon dioxide, magnesium stearate, hypromellose, talc, titanium dioxide, iron oxide yellow and iron oxide red. 505 505

Oseltamivir phosphate capsules, USP an influenza neuraminidase inhibitor (NAI), is available as: • Capsules containing 30 mg, 45 mg, or 75 mg of oseltamivir for oral use, in the form of oseltamivir phosphate USP. In addition to the active ingredient, each capsule contains croscarmellose sodium, isopropyl alcohol, povidone, pregelatinised starch, sodium stearyl fumarate and talc. The 30 mg capsule shell contains gelatin, iron oxide red, iron oxide yellow, titanium dioxide. The 45 mg capsule shell contains gelatin, iron oxide black, titanium dioxide. The 75 mg capsule shell contains gelatin, iron oxide red, iron oxide yellow, titanium dioxide, iron oxide black. Each capsule is printed with blue ink, which includes shellac, propylene glycol and FD&C Blue No. 2 as the colorant. Oseltamivir phosphate, USP is a white crystalline solid with the chemical name (3R,4R,5S)-4-acetylamino-5-amino-3(1-ethylpropoxy)-1-cyclohexene-1-carboxylic acid, ethyl ester, phosphate (1:1). The chemical formula is C 16 H 28 N 2 O 4 (free base). The molecular weight is 312.4 for oseltamivir free base and 410.4 for oseltamivir phosphate salt. The structural formula is as follows: str

Oxcarbazepine is an AED available as a 300 mg/5 mL (60 mg/mL) oral suspension. Oxcarbazepine is 10,11-Dihydro-10-oxo-5Hdibenz[b,f]azepine-5-carboxamide, and its structural formula is: Oxcarbazepine is a light orange to creamish white or off-white powder. It is slightly soluble in chloroform, dichloromethane, acetone, and methanol and practically insoluble in ethanol, ether and water. Its molecular weight is 252.27. Oxcarbazepine oral suspension, USP contains the following inactive ingredients: carboxymethylcellulose sodium noncrystallizing sorbitol solution, microcrystalline cellulose and carboxymethylcellulose sodium, ascorbic acid, methyl paraben, propyl paraben, sorbic acid, propylene glycol, saccharin sodium, colloidal silicon dioxide, flavour plum, hydrochloride acid, sodium hydroxide and purified water. oxcarbazepine-str

Perphenazine (4-[3-(2-chlorophenothiazin-10-yl)propyl]-1-piperazineethanol), a piperazinyl phenothiazine, having the chemical formula, C 21 H 26 CIN 3 OS. It is available as oral tablets containing 2 mg, 4 mg, 8 mg, and 16 mg of perphenazine. Inactive ingredients: microcrystalline cellulose, lactose (monohydrate), hypromellose, sodium starch glycolate, hydroxypropyl cellulose and magnesium stearate. The composition of coating material for perphenazine tablets, USP 2 mg, 4 mg, 8 mg, and 16 mg: hypromellose, polyethylene glycol, polysorbate 80, and titanium dioxide. Its structural formula is: ACTIONS Perphenazine has actions at all levels of the central nervous system, particularly the hypothalamus. However, the site and mechanism of action of therapeutic effect are not known. 505

Pioglitazone tablets USP are a thiazolidinedione and an agonist for peroxisome proliferator-activated receptor (PPAR) gamma that contains an oral antidiabetic medication: pioglitazone. Pioglitazone [(±)-5-[[4-[2-(5-ethyl-2-pyridinyl) ethoxy] phenyl] methyl]-2,4-] thiazolidinedione monohydrochloride contains one asymmetric carbon, and the compound is synthesized and used as the racemic mixture. The two enantiomers of pioglitazone interconvert in vivo. No differences were found in the pharmacologic activity between the two enantiomers. The structural formula is as shown: Pioglitazone hydrochloride, USP is an odorless white crystalline powder that has a molecular formula of C 19 H 20 N 2 O 3 S•HCl and a molecular weight of 392.90 daltons. It is soluble in N,N-dimethylformamide, slightly soluble in anhydrous ethanol, very slightly soluble in acetone and acetonitrile, practically insoluble in water, and insoluble in ether. Pioglitazone hydrochloride USP is available as a tablet for oral administration containing 15 mg, 30 mg, or 45 mg of pioglitazone (as the base) formulated with the following excipients: lactose monohydrate, hydroxypropylcellulose, carboxymethylcellulose calcium, and magnesium stearate. structure

Pioglitazone and metformin HCl tablets USP are a thiazolidinediones and biguanide combination product that contains two oral antidiabetic medications: pioglitazone hydrochloride USP and metformin hydrochloride USP. Pioglitazone [(±)-5-[[4-[2-(5-ethyl-2-pyridinyl) ethoxy]phenyl]methyl]-2,4-] thiazolidinedione monohydrochloride contains one asymmetric carbon, and the compound is synthesized and used as the racemic mixture. The two enantiomers of pioglitazone interconvert in vivo. No differences were found in the pharmacologic activity between the two enantiomers. The structural formula is as shown: Pioglitazone HCl USP is an odorless white crystalline powder that has a molecular formula of C 19 H 20 N 2 O 3 S•HCl and a molecular weight of 392.90 daltons. It is soluble in N,N-dimethylformamide, slightly soluble in anhydrous ethanol, very slightly soluble in acetone and acetonitrile, practically insoluble in water, and insoluble in ether. Metformin HCl USP (N,N-dimethylimidodicarbonimidic diamide hydrochloride) is a white crystalline powder with a molecular formula of C 4 H 11 N 5 •HCl and a molecular weight of 165.62. Metformin hydrochloride USP is freely soluble in water and is practically insoluble in acetone, ether, and chloroform. The pKa of metformin is 12.4. The pH of a 1% aqueous solution of metformin hydrochloride USP is 6.68. The structural formula is as shown: Pioglitazone and metformin HCl tablets USP are available as a tablet for oral administration containing 15 mg pioglitazone (as the base) with 500 mg metformin HCl USP (15 mg/500 mg) or 15 mg pioglitazone (as the base) with 850 mg metformin HCl USP (15 mg/850 mg) formulated with the following excipients: Croscarmellose sodium, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, povidone, talc and titanium dioxide. USP dissolution test 1. metpio metpio

Pirfenidone belongs to the chemical class of pyridone. Pirfenidone capsules USP are available as a white to off-white hard gelatin capsule containing 267 mg of pirfenidone for oral administration. Pirfenidone has a molecular formula of C 12 H 11 NO and a molecular weight of 185.23. Pirfenidone has the following structural formula, which has been referred to as 5-methyl-1-phenyl-2-1(H)-pyridone or 5-methyl-1-phenyl-2-(1H)-pyridone. Pirfenidone is a white to pale yellow, non-hygroscopic powder. It is more soluble in methanol, ethyl alcohol, acetone and chloroform than in water and 1.0 N HCl. The melting point is approximately 109°C. Pirfenidone capsules, USP contains pirfenidone and the following inactive ingredients: croscarmellose sodium, magnesium stearate, and pregelatinized starch. In addition, the capsule shell contains gelatin and titanium dioxide. The capsule brown printing ink includes ammonium hydroxide, iron oxide black, iron oxide brown, potassium hydroxide, propylene glycol, shellac. pirfenidone-str

Potassium chloride, USP is a colorless crystals or white crystalline powder. It is soluble in water and practically insoluble in alcohol. It is soluble in water and slightly soluble in alcohol. Chemically, Potassium Chloride is KCl with a molecular mass of 74.55. Oral Solution 10%: Each 15 mL of solution contains 1.5 g of potassium chloride, USP and the following inactive ingredients: citric acid anhydrous, FD&C Yellow #6, glycerin, purified water, sodium benzoate, trisodium citrate dihydrate, sucralose, sodium chloride, sodium sulphate, propylene glycol, natural/artificial orange flavour. Oral Solution 20%: Each 15 mL of solution contains 3 g of potassium chloride, USP and the following inactive ingredients: citric acid anhydrous, FD&C Yellow#6, glycerin, purified water, sodium benzoate, trisodium citrate dihydrate, sucralose, sodium chloride, sodium sulphate, propylene glycol, natural/artificial orange flavour.

Pramipexole dihydrochloride tablets contain pramipexole dihydrochloride (as a monohydrate). Pramipexole is a nonergot dopamine agonist. The chemical name of pramipexole dihydrochloride monohydrate is (S)-2-amino-4,5,6,7-tetrahydro-6-(propylamino)benzothiazole dihydrochloride monohydrate. Its empirical formula is C 10 H 17 N 3 S•2HCl•H 2 O, and its molecular weight is 302.26. Pramipexole dihydrochloride is a white to off-white powder substance. Melting occurs in the range of 296°C to 301°C, with decomposition. Pramipexole dihydrochloride is more than 20% soluble in water, about 8% in methanol, about 0.5% in ethanol, and practically insoluble in dichloromethane. Pramipexole dihydrochloride tablets 0.125 mg: Each tablet contains 0.125 mg pramipexole dihydrochloride monohydrate equivalent to 0.118 mg pramipexole dihydrochloride. Pramipexole dihydrochloride tablets 0.25 mg: Each tablet contains 0.25 mg pramipexole dihydrochloride monohydrate equivalent to 0.235 mg pramipexole dihydrochloride. Pramipexole dihydrochloride tablets 0.5 mg: Each tablet contains 0.5 mg pramipexole dihydrochloride monohydrate equivalent to 0.47 mg pramipexole dihydrochloride. Pramipexole dihydrochloride 1 mg tablets: Each tablet contains 1 mg pramipexole dihydrochloride monohydrate equivalent to 0.94 mg pramipexole dihydrochloride. Pramipexole dihydrochloride 1.5 mg tablets: Each tablet contains 1.5 mg pramipexole dihydrochloride monohydrate equivalent to 1.41 mg pramipexole dihydrochloride. Inactive ingredients for all strengths of pramipexole dihydrochloride tablets consist of mannitol, pregelatinized starch, colloidal silicon dioxide, povidone, and magnesium stearate. structure

Pramipexole dihydrochloride extended-release tablets contain pramipexole dihydrochloride (as a monohydrate). Pramipexole is a non-ergot dopamine agonist. The chemical name of pramipexole dihydrochloride monohydrate is ( S )-2-amino-4,5,6,7-tetrahydro-6-(propylamino) benzothiazole dihydrochloride monohydrate. Its empirical formula is C 10 H 17 N 3 S · 2HCl · H 2 O, and its molecular weight is 302.26. The structural formula is: Pramipexole dihydrochloride USP is a white to off-white powder substance. Melting occurs in the range of 296°C to 301°C, with decomposition. Pramipexole dihydrochloride USP is more than 20% soluble in water, about 8% in methanol, about 0.5% in ethanol, and practically insoluble in dichloromethane. Pramipexole dihydrochloride extended-release tablets, 0.375 mg: Each extended-release tablet contains 0.375 mg pramipexole dihydrochloride monohydrate equivalent to 0.352 mg pramipexole dihydrochloride, USP. Pramipexole dihydrochloride extended-release tablets, 0.75 mg: Each extended-release tablet contains 0.75 mg pramipexole dihydrochloride monohydrate equivalent to 0.705 mg pramipexole dihydrochloride, USP. Pramipexole dihydrochloride extended-release tablets, 1.5 mg: Each extended-release tablet contains 1.5 mg pramipexole dihydrochloride monohydrate equivalent to 1.41 mg pramipexole dihydrochloride, USP. Pramipexole dihydrochloride extended-release tablets, 2.25 mg: Each extended-release tablet contains 2.25 mg pramipexole dihydrochloride monohydrate equivalent to 2.12 mg pramipexole dihydrochloride, USP. Pramipexole dihydrochloride extended-release tablets, 3 mg: Each extended-release tablet contains 3 mg pramipexole dihydrochloride monohydrate equivalent to 2.82 mg pramipexole dihydrochloride, USP. Pramipexole dihydrochloride extended-release tablets, 3.75 mg: Each extended-release tablet contains 3.75 mg pramipexole dihydrochloride monohydrate equivalent to 3.53 mg pramipexole dihydrochloride, USP. Pramipexole dihydrochloride extended-release tablets, 4.5 mg: Each extended-release tablet contains 4.5 mg pramipexole dihydrochloride monohydrate equivalent to 4.23 mg pramipexole dihydrochloride, USP. Inactive ingredients for all strengths of pramipexole dihydrochloride extended-release tablets consist of hypromellose, mannitol, pregelatinized starch, carbomer homopolymer, colloidal silicon dioxide, and magnesium stearate. prami

Pregabalin, USP is described chemically as ( S )-3-(aminomethyl)-5-methylhexanoic acid. The molecular formula is C 8 H 17 NO 2 and the molecular weight is 159.23. The chemical structure of pregabalin is: Pregabalin is a white to off-white, crystalline solid with a pK a1 of 4.2 and a pK a2 of 10.6. It is freely soluble in water and both basic and acidic aqueous solutions. The log of the partition coefficient (n-octanol/0.05M phosphate buffer) at pH 7.4 is - 1.35. Pregabalin capsules are administered orally and are supplied as imprinted hard-shell capsules containing 25, 50, 75, 100, 150, 200, 225, and 300 mg of pregabalin, along with lactose monohydrate, pregelatinized starch, talc as inactive ingredients. The capsule shells contain gelatin, sodium lauryl sulfate and titanium dioxide. In addition, the orange capsule shells contain red iron oxide and the imprinting ink contains shellac, black iron oxide, propylene glycol, and potassium hydroxide. pregabalin-struct.jpg

Propylthiouracil USP is one of the thiocarbamide compounds. It is a white, crystalline substance that has a bitter taste and is very slightly soluble in water. Propylthiouracil USP is an antithyroid drug administered orally. The structural formula is: Each tablet contains propylthiouracil USP 50 mg and the following inactive ingredients: microcrystalline cellulose, pregelatinized starch (maize), sodium starch glycolate and magnesium stearate. str