alembic pharmaceuticals limited - Medication Listings

Metoprolol tartrate, USP is a selective beta1-adrenoreceptor blocking agent, available as 25 mg, 50 mg and 100 mg tablets for oral administration. Metoprolol tartrate USP is (±)-1-(Isopropylamino)-3-[p-2-methoxyethyl)phenoxy]-2-propanol L-(+)-tartrate (2:1) salt, its structural formula is: Metoprolol tartrate USP is a white, practically odorless, crystalline powder with a molecular weight of 684.82. It is very soluble in water; freely soluble in methylene chloride, in chloroform, and in alcohol; slightly soluble in acetone; and insoluble in ether. Each tablet for oral administration contains 25 mg, 50 mg or 100 mg of metoprolol tartrate and the following inactive ingredients: microcrystalline cellulose, lactose monohydrate, povidone, croscarmellose sodium, colloidal silicon dioxide, magnesium stearate hypromellose, titanium dioxide and polyethylene glycol. In addition, the 50 mg product contains D&C Red No. 30 Aluminum Lake and the 100 mg product contains FD&C Blue No. 2 Aluminum Lake and FD&C Blue No. 1 Aluminum Lake as coloring agents. Structure

Losartan potassium is an angiotensin II receptor blocker acting on the AT 1 receptor subtype. Losartan potassium, a non-peptide molecule, is chemically described as 2-butyl-4-chloro-1-[ p -( o -1 H tetrazol-5-ylphenyl)benzyl]imidazole-5-methanol monopotassium salt. Its empirical formula is C 22 H 22 ClKN 6 O, and its structural formula is: Losartan potassium 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. Losartan potassium tablets USP are available for oral administration containing either 25 mg, 50 mg or 100 mg of losartan potassium and the following inactive ingredients: lactose monohydrate, microcrystalline cellulose, pregelatinized starch, magnesium stearate, hydroxypropyl cellulose, hypromellose, titanium dioxide, D&C yellow No. 10 aluminum lake and FD&C blue No.2 aluminum lake. Losartan potassium tablets USP, 25 mg, 50 mg and 100 mg contain potassium in the following amounts: 2.12 mg (0.054 mEq), 4.24 mg (0.108 mEq) and 8.48 mg (0.216 mEq), respectively. Structure

Hydrochlorothiazide is the 3,4-dihydro derivative of chlorothiazide. Its chemical name is 6-Chloro-3,4-dihydro-2 H -1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide. Its empirical formula is C 7 H 8 ClN 3 O 4 S 2 ; its molecular weight is 297.74; and its structural formula is: It is a white, or practically white, crystalline powder which is slightly soluble in water, but freely soluble in sodium hydroxide solution. Hydrochlorothiazide is supplied as 12.5 mg capsules for oral use. Inactive ingredients: colloidal silicon dioxide, pregelatinized starch, lactose monohydrate, magnesium stearate. Gelatin capsules contain D&C Red # 28, D&C Yellow # 10, FD&C Blue # 1, gelatin, titanium dioxide. The capsules are printed with edible ink containing black iron oxide and pharmaceutical glaze. Structure

The active ingredient in pantoprazole sodium for injection (pantoprazole sodium), a PPI, is a substituted benzimidazole, sodium 5-(difluoromethoxy)-2-[[(3,4-dimethoxy-2-pyridinyl)methyl] sulfinyl]-1 H -benzimidazole, a compound that inhibits gastric acid secretion. Its empirical formula is C 16 H 14 F 2 N 3 NaO 4 S, with a molecular weight of 405.4. The structural formula is: Pantoprazole sodium is a white or almost white powder and is racemic. Pantoprazole has weakly basic and acidic properties. Pantoprazole sodium is freely soluble in water, very slightly soluble in phosphate buffer at pH 7.4, and practically insoluble in n-hexane. The reconstituted solution of pantoprazole sodium for injection is in the pH range of 9.0 to 10.5. Pantoprazole sodium for injection is supplied for intravenous administration as a sterile, freeze-dried powder in a single-dose clear glass vial fitted with a rubber stopper and crimp seal. Each vial contains 40 mg pantoprazole (equivalent to 45.1 mg of pantoprazole sodium), edetate disodium (1 mg), and sodium hydroxide to adjust pH. pantoprazole-structure

Celecoxib USP is chemically designated as 4-[5-(4-methylphenyl)-3-(trifluoromethyl)-1H-pyrazol-1-yl] benzenesulfonamide and is a diaryl-substituted pyrazole. The empirical formula is C17H14F3N3O2S, and the molecular weight is 381.38; the chemical structure is as follows: Celecoxib oral capsules contain either50 mg, 100 mg, 200 mg or 400 mg of celecoxib, together with inactive ingredients including: croscarmellose sodium, lactose monohydrate, magnesium stearate, povidone, sodium lauryl sulfate, titanium dioxide and gelatin. Details of non-volatile components of the imprinting ink are given below. 50 mg capsule contains shellac, propylene glycol and red iron oxide. 100 mg capsule contains shellac, propylene glycol and FD & C Blue No. # 2 aluminum lake. 200 mg capsule contains shellac, propylene glycol and yellow iron oxide. 400 mg capsule contains shellac, propylene glycol, titanium dioxide, yellow iron oxide and FD & C Blue No. # 2 aluminum lake. Structure

Fluoxetine capsules USP is a selective serotonin reuptake inhibitor for oral administration. It is also marketed for the treatment of premenstrual dysphoric disorder (Sarafem ® , fluoxetine hydrochloride). It is designated (±)-N-methyl-3-phenyl-3-[(α,α,α-trifluoro- p -tolyl)oxy]propylamine hydrochloride and has the empirical formula of C 17 H 18 F 3 NO•HCl. Its molecular weight is 345.79. The structural formula is: Fluoxetine hydrochloride is a white to off-white crystalline solid with a solubility of 14 mg/mL in water. Each capsule contains fluoxetine hydrochloride equivalent to 10 mg (32.3 μmol), 20 mg (64.7 μmol), or 40 mg (129.3 μmol) of fluoxetine. The capsules also contain lactose monohydrate, microcrystalline cellulose, colloidal silicone dioxide, gelatin, titanium dioxide, FD & C Blue No. 1 and FD & C Red No. 40. Structure

Fluoxetine (fluoxetine tablets, USP) is a selective serotonin reuptake inhibitor for oral administration. It is also marketed for the treatment of premenstrual dysphoric disorder (Sarafem ® , fluoxetine hydrochloride). It is designated (±)-N-methyl-3-phenyl-3-[(α,α,α-trifluoro- p -tolyl)oxy]propylamine hydrochloride and has the empirical formula of C 17 H 18 F 3 NO•HCl. Its molecular weight is 345.79. The structural formula is: Fluoxetine hydrochloride, USP is a white to off-white crystalline powder, it is freely soluble in alcohol and in methanol, sparingly soluble in water and in dichloromethane, practically insoluble in ether. Each tablet contains fluoxetine hydrochloride equivalent to 10 mg (32.3 μmol) or 20 mg (64.7 μmol) of fluoxetine. In addition, each tablet also contains the following inactive ingredients: microcrystalline cellulose, corn starch, hypromellose, crospovidone, magnesium stearate, colloidal silicon dioxide, titanium dioxide and polyethylene glycol. Structure

Azithromycin tablets, USP contains the active ingredient azithromycin, USP a macrolide antibacterial drug, for oral administration. Azithromycin has the chemical name ( 2R,3S,4R,5R,8R,10R,11R,12S,13S,14R )-13-[(2,6-dideoxy-3- C -methyl-3- O -methyl- α-L-ribo -hexopyranosyl)oxy]-2-ethyl-3,4,10-trihydroxy-3,5,6,8,10,12,14-heptamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)-β- D-xylo -hexopyranosyl]oxy]-1-oxa-6-azacyclopentadecan-15-one. Azithromycin is derived from erythromycin; however, it differs chemically from erythromycin in that a methyl-substituted nitrogen atom is incorporated into the lactone ring. Its molecular formula is C 38 H 72 N 2 O 12 , and its molecular weight is 749. Azithromycin has the following structural formula: Azithromycin, as the dihydrate, is a white crystalline powder with a molecular formula of C 38 H 72 N 2 O 12 •2H 2 O and a molecular weight of 785.02. Azithromycin tablets, USP contain azithromycin dihydrate equivalent to 600 mg azithromycin, USP. They also contain the following inactive ingredients: anhydrous dibasic calcium phosphate, croscarmellose sodium, hydroxypropyl cellulose, magnesium stearate, sodium lauryl sulfate, and an aqueous film coat consisting of lactose, hypromellose, titanium dioxide, and triacetin. FDA approved dissolution specification differs from the USP dissolution specification. structure

Azithromycin tablets, USP contain the active ingredient azithromycin, USP a macrolide antibacterial drug, for oral administration. Azithromycin has the chemical name (2R,3S,4R,5R,8R,10R,11R,12S,13S,14R)-13-[(2,6-dideoxy-3-C-methyl-3-O-methyl-α-L-ribo-hexopyranosyl) oxy]-2-ethyl-3,4,10-trihydroxy-3,5,6,8,10,12,14-heptamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)-β-D-xylo-hexopyranosyl]oxy]-1-oxa-6-azacyclopentadecan-15-one. Azithromycin is derived from erythromycin; however, it differs chemically from erythromycin in that a methyl-substituted nitrogen atom is incorporated into the lactone ring. Its molecular formula is C 38 H 72 N 2 O 12 , and its molecular weight is 749. Azithromycin has the following structural formula: Azithromycin as the dihydrate, is a white or almost white powder with a molecular formula of C 38 H 72 N 2 O 12 •2H 2 O and a molecular weight of 785.02. Azithromycin tablets, USP are supplied for oral administration as pink modified capsule shaped, film-coated tablets containing azithromycin dihydrate equivalent to 500 mg azithromycin, USP and the following inactive ingredients: anhydrous dibasic calcium phosphate, croscarmellose sodium, hydroxypropyl cellulose, magnesium stearate, sodium lauryl sulfate, lactose monohydrate, hypromellose, titanium dioxide, triacetin and D&C Red #30 Aluminum Lake. FDA approved dissolution specification differs from the USP dissolution specification. Structure

Azithromycin tablets, USP contain the active ingredient azithromycin, USP a macrolide antibacterial drug, for oral administration. Azithromycin has the chemical name (2R,3S,4R,5R,8R,10R,11R,12S,13S,14R)-13-[(2,6-dideoxy-3-C-methyl-3-O-methyl-α-L-ribo-hexopyranosyl) oxy]-2-ethyl-3,4,10-trihydroxy-3,5,6,8,10,12,14-heptamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)-β-D-xylo-hexopyranosyl]oxy]-1-oxa-6-azacyclopentadecan-15-one. Azithromycin is derived from erythromycin; however, it differs chemically from erythromycin in that a methyl-substituted nitrogen atom is incorporated into the lactone ring. Its molecular formula is C 38 H 72 N 2 O 12 , and its molecular weight is 749. Azithromycin has the following structural formula: Azithromycin as the dihydrate, is a white or almost white powder with a molecular formula of C 38 H 72 N 2 O 12 •2H 2 O and a molecular weight of 785.02. Azithromycin tablets, USP are supplied for oral administration as pink modified capsule shaped, film-coated tablets containing azithromycin dihydrate equivalent to 250 mg azithromycin, USP and the following inactive ingredients: anhydrous dibasic calcium phosphate, croscarmellose sodium, hydroxypropyl cellulose, magnesium stearate, sodium lauryl sulfate, lactose monohydrate, hypromellose, titanium dioxide, triacetin and D&C Red #30 Aluminum Lake. FDA approved dissolution specification differs from the USP dissolution specification. Structure

Clarithromycin is a semi-synthetic macrolide antimicrobial for oral use. Chemically, it is 6- 0 ­ methylerythromycin. The molecular formula is C38H69NO13, and the molecular weight is 747.95. The structural formula is: Figure 1: Structure of Clarithromycin Clarithromycin is a white to off-white crystalline powder. It is soluble in acetone, slightly soluble in dehydrated alcohol, in methanol, in acetonitrile and in phosphate buffer at pH values of 2 to 5. Practically insoluble in water. Clarithromycin tablets, USP are available as immediate-release tablets. Each yellow oval film-coated immediate-release clarithromycin tablet, USP contains 250 mg or 500 mg of clarithromycin USP and the following inactive ingredients: 250 mg tablets: microcrystalline cellulose, croscarmellose sodium, pregelatinized starch, colloidal silicon dioxide, povidone K-30, stearic acid, magnesium stearate, hypromellose, hydroxypropyl cellulose, propylene glycol, talc, vanillin, titanium dioxide, and D&C Yellow No. 10 Aluminium Lake. 500 mg tablets: microcrystalline cellulose, croscarmellose sodium, colloidal silicon dioxide, povidone K-30, magnesium stearate, hypromellose, hydroxypropyl cellulose, propylene glycol, talc, vanillin, titanium dioxide, and D&C Yellow No. 10 Aluminium Lake. Structure

Donepezil hydrochloride is a reversible inhibitor of the enzyme acetylcholinesterase, known chemically as (±)-2,3-dihydro-5,6-dimethoxy-2-[[1-(phenylmethyl)-4-piperidinyl]methyl]-1 H -inden-1-one hydrochloride. Donepezil hydrochloride is commonly referred to in the pharmacological literature as E2020. It has an empirical formula of C 24 H 29 NO 3 HCl and a molecular weight of 415.96. Donepezil hydrochloride is a white crystalline powder and is freely soluble in chloroform, soluble in water and in glacial acetic acid, slightly soluble in ethanol and in acetonitrile and practically insoluble in ethyl acetate and in n-hexane. Donepezil hydrochloride tablets, USP are available for oral administration in film-coated tablets containing 5, or 10 mg of donepezil hydrochloride USP . Inactive ingredients are lactose monohydrate, corn starch, microcrystalline cellulose, hydroxypropyl cellulose, and magnesium stearate. The film coating contains talc, polyethylene glycol, hypromellose and titanium dioxide. Additionally, the 10 mg tablet contains iron oxide yellow as a coloring agent. Structure

Duloxetine hydrochloride is a selective serotonin and norepinephrine reuptake inhibitor (SNRI) for oral administration. Its chemical designation is (+)-(S)-N-methyl-γ-(1-naphthyloxy)-2-thiophenepropylamine hydrochloride. The empirical formula is C 18 H 19 NOS•HCl, which corresponds to a molecular weight of 333.88. The structural formula is: Duloxetine hydochloride USP is a white to off-white powder, which is freely soluble in methanol and slightly soluble in water. Each capsule contains enteric-coated pellets of 20, 30 and 60 mg of duloxetine (equivalent to 22.4, 33.7, or 67.3 mg of duloxetine hydrochloride, respectively). These enteric-coated pellets are designed to prevent degradation of the drug in the acidic environment of the stomach. Inactive ingredients include sugar spheres, hypromellose, talc, sucrose, hypromellose phthalate, triethyl citrate, FD&C Blue No. 2, titanium dioxide, gelatin, sodium lauryl sulfate. The 20 and 60 mg capsules also contain iron oxide yellow. Ink contains following ingredients: 20 mg: shellac, black iron oxide, potassium hydroxide, propylene glycol and strong ammonia solution 30 mg: shellac, titanium dioxide, yellow iron oxide, FD&C Blue No. 2 Aluminum Lake, propylene glycol and strong ammonia solution 60 mg: shellac, potassium hydroxide, titanium dioxide, propylene glycol and strong ammonia solution duloxetine-structure

Paroxetine extended-release tablets USP, contains paroxetine hydrochloride, USP an SSRI. It is the hydrochloride salt of a phenylpiperidine compound identified chemically as (-)- trans -4R-(4’-fluorophenyl)-3S-[(3’,4’­ methylenedioxyphenoxy) methyl] piperidine hydrochloride hemihydrate and has the empirical formula of C 19 H 20 FNO 3 •HCl•1/2H 2 O. The molecular weight is 374.8 g/mol (329.4 g/mol as free base). The structural formula of paroxetine hydrochloride, USP is: Paroxetine hydrochloride, USP is white or almost white crystalline powder, having a melting point range of 120 o C to 138 o C and soluble in methanol and in alcohol, slightly soluble in water. Paroxetine extended-release tablets, USP are intended for oral administration. Each extended-release tablet contains 25 mg or 37.5 mg paroxetine equivalent to 28.51 mg or 42.76 mg of paroxetine hydrochloride USP, respectively. Each tablet consists of a hydrophilic matrix that contains the active material. Inactive ingredients consist of colloidal silicon dioxide, glyceryl dibehenate, hypromellose, lactose monohydrate, magnesium stearate, methacrylic acid copolymer, povidone K-30, talc and triethyl citrate. The film-coating material contains hypromellose, polyethylene glycol 400, polyethylene glycol 6000 and titanium dioxide. Additionally, 25 mg tablets contain D&C Red No. 30 Lake and polysorbate 80 and 37.5 mg tablets contain FD&C Blue No. 2 Aluminium Lake and talc. FDA approved dissolution test specifications differ from USP. paroxetine-str.jpg

Acetazolamide extended-release capsules are an inhibitor of the enzyme carbonic anhydrase. Acetazolamide is a white to faintly yellowish white crystalline, odorless powder, sparingly soluble in practically boiling water, very slightly soluble in water and slightly soluble in alcohol. The chemical name for acetazolamide is N-(5-Sulfamoyl-1,3,4-thiadiazol-2-yl)acetamide and has the following chemical structure: MW 222.25 C 4 H 6 N40 3 S 2 Acetazolamide are extended-release capsules, for oral administration, each containing 500 mg of acetazolamide and the following inactive ingredients: Microcrystalline cellulose, sodium lauryl sulfate and talc. The ingredients in the capsule shell are D&C Red No. 28, D&C Yellow No. 10, FD&C Red No. 40, gelatin and titanium dioxide. The ingredients in the imprinting ink are shellac, propylene glycol, potassium hydroxide and iron oxide black. Structure

Acitretin, USP a retinoid, is available in 10-mg, 17.5-mg, and 25-mg gelatin capsules for oral administration. Chemically, acitretin is all-trans-9-(4-methoxy-2,3,6-trimethylphenyl)-3,7-dimethyl-2,4,6,8-nonatetraenoic acid. It is a metabolite of etretinate and is related to both retinoic acid and retinol (vitamin A). It is a yellow to greenish-yellow crystalline powder with a molecular weight of 326.44. The structural formula is: Each capsule contains acitretin, microcrystalline cellulose, maltodextrin, sodium ascorbate, sodium lauryl sulfate, colloidal silicon dioxide and magnesium stearate. Gelatin capsule shells contain gelatin, iron oxide yellow, iron oxide red, titanium dioxide and sodium lauryl sulfate. Additionally, 10 mg and 25 mg gelatin capsule shells contains iron oxide black. The gelatin capsule shells are printed with edible black ink containing shellac, iron oxide black and potassium hydroxide. FDA approved dissolution test specifications differ from USP. acitretin-structure.jpg

Adapalene Gel USP, 0.3% contains adapalene USP, 0.3% (3 mg/g) in a topical aqueous gel for use in the treatment of acne vulgaris, consisting of carbopol 980, edetate disodium, methylparaben, poloxamer 124, propylene glycol, purified water, and sodium hydroxide. May contain hydrochloric acid for pH adjustment. The chemical name of adapalene, USP is 6-[3-(1-adamantyl)-4-methoxyphenyl]-2-naphthoic acid. It is a white to off-white powder, which is soluble in tetrahydrofuran, very slightly soluble in ethanol, and practically insoluble in water. The molecular formula is C 28 H 28 O 3 and molecular weight is 412.53. Adapalene, USP is represented by the following structural formula. Image

Adapalene and benzoyl peroxide topical gel USP, 0.3%/2.5% is a white to very pale yellow, opaque gel for topical use containing adapalene 0.3% and benzoyl peroxide 2.5%. Adapalene, a synthetic retinoid, is a naphthoic acid derivative with retinoid-like properties. The chemical name for adapalene is (6-[3-(1-adamantyl)-4-methoxyphenyl]-2-naphthoic acid). It has the following structural formula: Adapalene: Molecular formula: C 28 H 28 O 3 Molecular weight: 412.5 Benzoyl peroxide is a highly lipophilic oxidizing agent that localizes in both bacterial and keratinocyte cell membranes. The chemical name for benzoyl peroxide is dibenzoyl peroxide. It has the following structural formula: Benzoyl Peroxide: Molecular formula: C 14 H 10 O 4 Molecular weight: 242.23 Adapalene and benzoyl peroxide topical gel USP contains the following inactive ingredients: acrylamide/sodium acryloyldimethyltaurate copolymer, docusate sodium, edetate disodium, glycerin, isohexadecane, poloxamer 124, polysorbate 80, propylene glycol, purified water and sorbitan oleate. Image Image

Albendazole, USP is an orally administered anthelmintic drug. Chemically, it is methyl 5-(propylthio)-2-benzimidazolecarbamate. Its molecular formula is C 12 H 15 N 3 O 2 S. Its molecular weight is 265.34. It has the following chemical structure: Albendazole, USP is a white to faintly yellowish powder. It is freely soluble in anhydrous formic acid; very slightly soluble in ether and in methylene chloride; practically insoluble in ethanol (96%) and in water. Albendazole tablets, USP are white to off-white, round, biconvex, bevel edged, film-coated tablets debossed with “L763” on one side and plain on other sides. Inactive ingredients consist of corn starch, lactose monohydrate, magnesium stearate microcrystalline cellulose, povidone K-30, saccharin sodium dihydrate, sodium lauryl sulphate and sodium starch glycolate (Type A). The film-coating material consists of polyethylene glycol 3000, polyvinyl alcohol, talc and titanium dioxide. albendazole-structure.jpg

Amantadine hydrochloride, USP is designated generically as amantadine hydrochloride and chemically as 1-adamantanamine hydrochloride. Amantadine hydrochloride, USP is a stable white or practically white crystalline powder, freely soluble in water, soluble in alcohol and in chloroform. Amantadine hydrochloride, USP has pharmacological actions as both an anti-Parkinson and an antiviral drug. Each tablet intended for oral administration contains 100 mg amantadine hydrochloride, USP and has the following inactive ingredients: microcrystalline cellulose, povidone K-30, povidone K-90, sodium starch glycolate, colloidal silicon dioxide, magnesium stearate and FD&C Yellow No. 6 Aluminium Lake. amantadine-str.jpg

Amantadine hydrochloride is designated chemically as 1-adamantanamine hydrochloride. Its molecular weight is 187.71 with a molecular formula C 10 H 18 NCl. It has the following structural formula: Amantadine hydrochloride is a stable white or almost white crystalline powder, freely soluble in water and soluble in alcohol and in chloroform. Amantadine hydrochloride has pharmacological actions as both an anti-Parkinson and an antiviral drug. Amantadine hydrochloride is available as 100 mg capsules for oral administration. Inactive ingredients: microcrystalline cellulose, hydroxypropyl cellulose, croscarmellose sodium, colloidal silicon dioxide, magnesium stearate, gelatin, titanium dioxide, FD&C Blue #1, FD&C Red #40. The non-volatile components of imprinting ink are shellac, propylene glycol, potassium hydroxide and titanium oxide. Meets USP Dissolution Test 2. Structure

Amlodipine and atorvastatin tablets, USP combine the calcium channel blocker amlodipine besylate, USP with the HMG-CoA-reductase inhibitor atorvastatin calcium, USP. Amlodipine besylate, USP is chemically described as 3-ethyl-5-methyl (±)-2-[(2-aminoethoxy)methyl]-4-(o-chlorophenyl)-1,4-dihydro­ 6-methyl-3,5-pyridinedicarboxylate, monobenzenesulphonate. Its empirical formula is C 20 H 25 ClN 2 O 5 •C 6 H 6 O 3 S. Atorvastatin calcium, USP is chemically described as [R-(R*, R*)]-2-(4-fluorophenyl)-ß, δ-dihydroxy-5-(1-methylethyl)-3-phenyl­4-[(phenylamino)carbonyl]-1H-pyrrole-1-heptanoic acid, calcium salt (2:1) trihydrate. Its empirical formula is (C 33 H 34 FN 2 O 5 ) 2 Ca•3H 2 O. The structural formulae for amlodipine besylate, USP and atorvastatin calcium, USP are shown below. Amlodipine besylate Atorvastatin calcium Amlodipine and atorvastatin tablets, USP contain amlodipine besylate, USP, a white or almost white powder, and atorvastatin calcium, USP, a white to off-white powder. Amlodipine besylate, USP has a molecular weight of 567.1 and atorvastatin calcium, USP has a molecular weight of 1209.42. Amlodipine besylate, USP is freely soluble in methanol, sparingly soluble in ethanol, slightly soluble in 2-propanol and in water. Atorvastatin calcium, USP is freely soluble in methanol, slightly soluble in ethanol, very slightly soluble in water and in pH 7.4 phosphate buffer, insoluble in aqueous solution of pH 4 and in acetonitrile. Amlodipine and atorvastatin tablets, USP are available as film-coated tablets for oral administration containing: • 2.5 mg amlodipine equivalent to 3.5 mg amlodipine besylate, USP and 10 mg atorvastatin equivalent to 10.3 mg atorvastatin calcium, USP. • 2.5 mg amlodipine equivalent to 3.5 mg amlodipine besylate, USP and 20 mg atorvastatin equivalent to 20.7 mg atorvastatin calcium, USP. • 2.5 mg amlodipine equivalent to 3.5 mg amlodipine besylate, USP and 40 mg atorvastatin equivalent to 41.4 mg atorvastatin calcium, USP. • 5 mg amlodipine equivalent to 6.9 mg amlodipine besylate, USP and 10 mg atorvastatin equivalent to 10.3 mg atorvastatin calcium, USP. • 5 mg amlodipine equivalent to 6.9 mg amlodipine besylate, USP and 20 mg atorvastatin equivalent to 20.7 mg atorvastatin calcium, USP. • 5 mg amlodipine equivalent to 6.9 mg amlodipine besylate, USP and 40 mg atorvastatin equivalent to 41.4 mg atorvastatin calcium, USP. • 5 mg amlodipine equivalent to 6.9 mg amlodipine besylate, USP and 80 mg atorvastatin equivalent to 82.7 mg atorvastatin calcium, USP. • 10 mg amlodipine equivalent to 13.9 mg amlodipine besylate, USP and 10 mg atorvastatin equivalent to 10.3 mg atorvastatin calcium, USP. • 10 mg amlodipine equivalent to 13.9 mg amlodipine besylate, USP and 20 mg atorvastatin equivalent to 20.7 mg atorvastatin calcium, USP. • 10 mg amlodipine equivalent to 13.9 mg amlodipine besylate, USP and 40 mg atorvastatin equivalent to 41.4 mg atorvastatin calcium, USP. • 10 mg amlodipine equivalent to 13.9 mg amlodipine besylate, USP and 80 mg atorvastatin equivalent to 82.7 mg atorvastatin calcium, USP. Each film-coated tablet also contains calcium carbonate, colloidal silicon dioxide, croscarmellose sodium, hydroxypropyl cellulose, magnesium stearate, microcrystalline cellulose, polyethylene glycol 3000, polysorbate 80, polyvinyl alcohol, pregelatinized starch, talc and titanium dioxide. Additionally 10 mg/10 mg, 10 mg/20 mg, 10 mg/40 mg and 10 mg/80 mg also contains FD&C Blue #2 Aluminum Lake. Amlodipine and atorvastatin tablets, USP meets USP Dissolution Test 2 . amloatorva-amlodipine.jpg amloatorva-atorvastatin.jpg

Amlodipine and valsartan tablets, USP are fixed combination of amlodipine and valsartan. Amlodipine and valsartan tablets, USP contains the besylate salt of amlodipine, a dihydropyridine calcium-channel blocker (CCB). Amlodipine besylate is a white or almost white powder, slightly soluble in water and sparingly soluble in ethanol. Amlodipine besylate’s chemical name is 3-Ethyl-5-methyl(4RS)-2-[(2-aminoethoxy)methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate benzenesulphonate; its structural formula is Its empirical formula is C 20 H 25 ClN 2 O 5 •C 6 H 6 O 3 S and its molecular weight is 567.1. Valsartan is a nonpeptide, orally active, and specific angiotensin II antagonist acting on the AT1 receptor subtype. Valsartan is white or almost white hygroscopic powder, freely soluble in anhydrous ethanol; sparingly soluble in methylene chloride; practically insoluble in water. Valsartan’s chemical name is N-(1-oxopentyl)-N-[[2’-(1H-tetrazol-5-yl)[1,1’-biphenyl]-4-yl]methyl]-L-valine; its structural formula is Its empirical formula is C 24 H 29 N 5 O 3 and its molecular weight is 435.5. Amlodipine and valsartan tablets, USP are formulated in four strengths for oral administration with a combination of amlodipine besylate, equivalent to 5 mg or 10 mg of amlodipine free-base, with 160 mg, or 320 mg of valsartan providing for the following available combinations: 5/160 mg, 10/160 mg, 5/320 mg, and 10/320 mg. The inactive ingredients for all strengths of the tablets are colloidal silicon dioxide, crospovidone, magnesium stearate and microcrystalline cellulose. Additionally the 5/160 mg and 5/320 mg strengths contain iron oxide red. The film coating contains hypromellose, iron oxide yellow, polyethylene glycol, talc and titanium dioxide. Amlodipine besylate Valsartan

Amlodipine and olmesartan medoxomil tablets provided as a tablet for oral administration, is a combination of the calcium channel blocker (CCB) amlodipine besylate and the angiotensin II receptor blocker (ARB) olmesartan medoxomil. The amlodipine besylate component of amlodipine and olmesartan medoxomil tablet is chemically described as 3-ethyl-5-methyl (±)-2-[(2-aminoethoxy)methyl]-4-(2-chlorophenyl)-1,4-dihydro-6-methyl- 3,5pyridinedicarboxylate, monobenzenesulphonate. Its empirical formula is C 20 H 25 ClN 2 O 5 •C 6 H 6 O 3 S. Olmesartan medoxomil, a prodrug, is hydrolyzed to olmesartan during absorption from the gastrointestinal tract. The olmesartan medoxomil component of amlodipine and olmesartan medoxomil tablet is chemically described as 2,3dihydroxy-2-butenyl 4-(1-hydroxy-1-methylethyl)-2-propyl-1-[ p- ( o- 1 H -tetrazol-5-ylphenyl)benzyl]imidazole-5-carboxylate, cyclic 2,3-carbonate. Its empirical formula is C 29 H 30 N 6 O 6 . The structural formula for amlodipine besylate is: The structural formula for olmesartan medoxomil is Amlodipine and olmesartan medoxomil tablet contains amlodipine besylate, a white or almost white powder, and olmesartan medoxomil, white to off-white, crystalline powder. The molecular weights of amlodipine besylate and olmesartan medoxomil are 567.1 and 558.59, respectively. Amlodipine besylate is freely soluble in methanol, sparingly soluble in alcohol, slightly soluble in 2-propanol and in water. Olmesartan medoxomil is sparingly soluble in methanol, practically insoluble in water. Each amlodipine and olmesartan medoxomil tablet also contains the following inactive ingredients: microcrystalline cellulose, pregelatinized starch, croscarmellose sodium, magnesium stearate and colloidal silicon dioxide. The color coatings contain polyvinyl alcohol, macrogol/ polyethylene glycol 3350, titanium dioxide, talc, iron oxide yellow (5/40 mg, 10/20 mg, 10/40 mg tablets), iron oxide red (5/40 mg, 10/20 mg and 10/40 mg tablets), and iron oxide black (5/40 mg, 10/20 mg and 10/40 mg tablets). amlodipine besylate olmesartan medoxomil

Aripiprazole is a psychotropic drug that is available as Aripiprazole Tablets. Aripiprazole is 7-[4-[4-(2,3-dichlorophenyl)-1piperazinyl]butoxy]-3,4-dihydrocarbostyril. The empirical formula is C 23 H 27 Cl 2 N 3 O 2 and its molecular weight is 448.38. The chemical structure is: Aripiprazole Tablets are available in 2 mg, 5 mg, 10 mg, 15 mg, 20 mg, and 30 mg strengths. Inactive ingredients include corn starch, hydroxypropyl cellulose, lactose monohydrate, crospovidone, colloidal silicon dioxide, magnesium stearate and microcrystalline cellulose. Colorants include ferric oxide (yellow or red). Structure

Aripiprazole is a psychotropic drug that is available as Aripiprazole Orally Disintegrating Tablets. Aripiprazole is 7-[4-[4-(2,3-dichlorophenyl)-1piperazinyl]butoxy]-3,4-dihydrocarbostyril. The empirical formula is C 23 H 27 Cl 2 N 3 O 2 and its molecular weight is 448.39. The chemical structure is: Aripiprazole Orally Disintegrating Tablets are available in 10 mg and 15 mg strengths. Inactive ingredients include mannitol, aspartame, calcium stearate, crospovidone, vanilla, silicified microcrystalline cellulose, and lactose monohydrate. Colorants include iron oxide red. Structure

Asenapine sublingual tablet contains asenapine maleate which is an atypical antipsychotic that is available for sublingual administration. Asenapine belongs to the class dibenzo-oxepino pyrroles. The chemical designation is (3a RS ,12b RS )-5-Chloro-2-methyl-2,3,3a,12b-tetrahydro-1 H dibenzo[2,3:6,7]oxepino[4,5- c ]pyrrole (2 Z )-2 butenedioate (1:1). Its molecular formula is C 17 H 16 ClNO⋅C 4 H 4 O 4 and its molecular weight is 401.84 (free base: 285.8). The chemical structure is: Asenapine maleate is off-white to white powder. Asenapine is supplied for sublingual administration in tablets containing 2.5-mg, 5-mg or 10-mg asenapine; inactive ingredients include povidone, butylated hydroxy toluene, butylated hydroxy anisole, mannitol, low-substituted hydroxypropyl cellulose, sodium stearyl fumarate. Structure

Azelastine hydrochloride ophthalmic solution, USP 0.05% is a sterile ophthalmic solution containing azelastine hydrochloride, a relatively selective H 1 -receptor antagonist for topical administration to the eyes. Azelastine hydrochloride is a white crystalline powder with a molecular weight of 418.37. Azelastine hydrochloride is sparingly soluble in water, methanol and propylene glycol, and slightly soluble in ethanol, octanol, and glycerine. Azelastine hydrochloride is a racemic mixture with a melting point of 225°C. The chemical name for azelastine hydrochloride is (±)-1-(2H)-phthalazinone,4-[(4-chlorophenyl)methyl]-2-(hexahydro-1-methyl-1H-azepin-4-yl)-, monohydrochloride and is represented by the following chemical structure: Structural formula: C 22 H 24 ClN 3 O•HCl Each mL of azelastine hydrochloride ophthalmic solution, USP 0.05% contains: Active: 0.5 mg azelastine hydrochloride, equivalent to 0.457 mg of azelastine base; Preservative: 0.125 mg benzalkonium chloride; Inactives: disodium edetate dihydrate, hypromellose, sorbitol solution, sodium hydroxide and water for injection. It has a pH of approximately 5.0 to 6.5 and an osmolarity of approximately 271 to 312 mOsmol/L. azelastine-hydrochloride-str

Bepotastine besilate ophthalmic solution 1.5% is a sterile, topically administered drug for ophthalmic use. Each mL of bepotastine besilate ophthalmic solution contains 15 mg bepotastine besilate. Bepotastine besilate is designated chemically as (+) -4-[[(S)-p-chloro-alpha -2-pyridylbenzyl]oxy]-1-piperidine butyric acid monobenzenesulfonate. The chemical structure for bepotastine besilate is: Bepotastine besilate is white or pale yellowish crystalline powder. The molecular weight of bepotastine besilate is 547.06 daltons. Bepotastine besilate ophthalmic solution is supplied as a sterile, aqueous 1.5% solution, with a pH of 6.8. The osmolality of bepotastine besilate ophthalmic solution 1.5% is approximately 290 mOsm/kg. Each mL Bepotastine besilate ophthalmic solution 1.5% contains: Active: bepotastine besilate 15 mg (equivalent to 10.7 mg bepotastine) Preservative: benzalkonium chloride 0.005% Inactives: monobasic sodium phosphate dihydrate, sodium chloride, sodium hydroxide to adjust pH, and water for injection, USP. bepotastine-structure

Betamethasone valerate foam, 0.12% contains betamethasone valerate, a synthetic corticosteroid, for topical dermatologic use. The corticosteroids constitute a class of primarily synthetic steroids used topically as anti-inflammatory agents. Betamethasone valerate is 9α-fluoro-11ß,17,21-trihydroxy-16ß-methylpregna-1,4-diene-3,20-dione-17-valerate, with the empirical formula C 27 H 37 FO 6 , a molecular weight of 476.58. The following is the chemical structure: Betamethasone valerate Betamethasone valerate, USP is a white to almost-white, crystalline powder, and is practically insoluble in water, freely soluble in acetone and in chloroform, soluble in alcohol, and slightly soluble in benzene and in ether. Betamethasone valerate foam, 0.12%, contains 1.2 mg betamethasone valerate, USP, per gram in a thermolabile hydroethanolic foam vehicle consisting of cetyl alcohol, citric acid, ethanol (60.4%), polysorbate 60, potassium citrate, propylene glycol, purified water, and stearyl alcohol pressurized with a hydrocarbon (propane/butane) propellant. Image

Bimatoprost ophthalmic solution, 0.03% is a synthetic prostamide analog with ocular hypotensive activity. Its chemical name is (Z)-7-[(1 R ,2 R ,3 R ,5 S )-3,5-Dihydroxy-2-[(1 E ,3 S )-3-hydroxy-5-phenyl-1- pentenyl]cyclopentyl]-5- N -ethylheptenamide, and its molecular weight is 415.58. Its molecular formula is C 25 H 37 NO 4 . Its chemical structure is: Bimatoprost is a powder, soluble in methanol and alcohol. Bimatoprost ophthalmic solution, 0.03% is a clear, isotonic, colorless, sterile ophthalmic solution with an osmolality of approximately 290 mOsmol/kg. Bimatoprost ophthalmic solution, 0.03% contains Active : bimatoprost 0.3 mg/mL; Inactives :benzalkonium chloride 0.05 mg/mL; disodium hydrogen phosphate heptahydrate, citric acid monohydrate, sodium chloride and water for injection. Sodium hydroxide and/or hydrochloric acid may be added to adjust pH. The pH during its shelf life ranges from 6.8 to 7.8. bimatoprost-struc

Bimatoprost ophthalmic solution, 0.03% is a synthetic prostaglandin analog. Its chemical name is (Z)-7-[( 1R, 2R, 3R, 5S )-3, 5-Dihydroxy-2-[(1E, 3S)-3-hydroxy-5-phenyl-1pentenyl] cyclopentenyl]-5-N-ethylheptenamide, and its molecular weight is 415.58. Its molecular formula is C 25 H 37 NO 4 . Its chemical structure is: Bimatoprost is a powder, which is soluble in methanol and alcohol. Bimatoprost ophthalmic solution 0.03% is clear, isotonic, colorless, sterile ophthalmic solution with an osmolality of approximately 290 mOsmol/kg. Bimatoprost Ophthalmic Solution 0.03% contains: Active : bimatoprost 0.3 mg/mL; Preservative : benzalkonium chloride 0.05 mg/mL; Inactives : sodium chloride; sodium phosphate, dibasic; citric acid; and water for injection. Sodium hydroxide and/or hydrochloric acid may be added to adjust pH. The pH during its shelf-life ranges from 6.8 to7.8. bimatoprost-struc

BISOPROLOL FUMARATE is a synthetic, beta 1 -selective (cardioselective) adrenoceptor blocking agent. The chemical name for bisoprolol fumarate is (±)-1-[4-[[2-(1-Methylethoxy) ethoxy]methyl] phenoxy]-3-[(1-methylethyl)amino]-2-propanol( E )-2-butenedioate (2:1) (salt). It possesses an asymmetric carbon atom in its structure and is provided as a racemic mixture. The S(-) enantiomer is responsible for most of the beta-blocking activity. Its molecular formula is (C 18 H 31 NO 4 ) 2 •C 4 H 4 O 4 and its structure is: Bisoprolol Fumarate has a molecular weight of 766.97. It is a white crystalline powder which is approximately equally hydrophilic and lipophilic, and is readily soluble in water, methanol, ethanol, and chloroform. BISOPROLOL FUMARATE TABLETS, USP is available as 5 and 10 mg tablets for oral administration. Inactive ingredients include colloidal silicon dioxide, partially pregelatinized starch, crospovidone, anhydrous dibasic calcium phosphate, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, titanium dioxide and talc. Structure

Brimonidine tartrate ophthalmic solution 0.1%, sterile, is a relatively selective alpha-2 adrenergic receptor agonist (topical intraocular pressure lowering agent). The structural formula of brimonidine tartrate is: 5-bromo-6-(2-imidazolidinylideneamino) quinoxaline L-tartrate; MW= 442.24 In solution, brimonidine tartrate ophthalmic solution has a clear, greenish-yellow color. It has an osmolality of 250-350 mOsmol/kg and a pH of 7.4-8.0. Brimonidine tartrate appears as wheatish to pale-yellow powder and is soluble in both water (0.6 mg/mL) and in the product vehicle (1.4 mg/mL) at pH 7.7. Each mL of brimonidine tartrate ophthalmic solution contains the active ingredient brimonidine tartrate 0.1% (1.0 mg/mL) with the inactive ingredients sodium carboxymethylcellulose; sodium borate; boric acid; sodium chloride; potassium chloride; calcium chloride; magnesium chloride; stabilized oxychloro complex 0.005% (0.05 mg/mL) as a preservative; water for injection; and hydrochloric acid and/or sodium hydroxide to adjust pH. brimonidine-structure

Brimonidine tartrate and timolol maleate ophthalmic solution 0.2%/0.5%, sterile, is a relatively selective alpha-2 adrenergic receptor agonist with a non-selective beta-adrenergic receptor inhibitor (topical intraocular pressure lowering agent). The structural formulae are: Brimonidine tartrate: 5-bromo-6-(2-imidazolidinylideneamino) quinoxaline L-tartrate; MW= 442.24 Timolol maleate: (-)-1-( tert -butylamino)-3-[(4-morpholino-1,2,5-thiadiazol-3-yl)-oxy]-2-propanol maleate (1:1) (salt); MW= 432.50 as the maleate salt In solution, brimonidine tartrate and timolol maleate ophthalmic solution 0.2% /0.5% has a clear, greenish-yellow color. It has an osmolality of 260 to 330 mOsmol/kg and a pH during its shelf life of 6.5 to 7.3. Brimonidine tartrate appears as an off-white, or white to pale-yellow powder and is soluble in both water (1.5 mg/mL) and in the product vehicle (3 mg/mL) at pH 7.2. Timolol maleate appears as a white, odorless, crystalline powder and is soluble in water, methanol, and alcohol. Each mL of brimonidine tartrate and timolol maleate ophthalmic solution contains the active ingredients brimonidine tartrate 0.2% and timolol 0.5% with the inactive ingredients benzalkonium chloride 0.005%; sodium phosphate, monobasic; sodium phosphate, dibasic; purified water; and hydrochloric acid and/or sodium hydroxide to adjust pH. brimo-timo-structure-brimonidine brimo-timo-struc-timolol

Brimonidine tartrate ophthalmic solution 0.15%, sterile, is a relatively selective alpha-2 adrenergic receptor agonist (topical intraocular pressure lowering agent). The structural formula of brimonidine tartrate is: 5-bromo-6-(2-imidazolidinylideneamino) quinoxaline L-tartrate; MW= 442.24 In solution, brimonidine tartrate ophthalmic solution has a clear, greenish-yellow color. It has an osmolality of 250-350 mOsmol/kg and a pH of 6.6-7.4. Brimonidine tartrate appears as wheatish to pale-yellow powder and is soluble in both water (0.6 mg/mL) and in the product vehicle (1.4 mg/mL) at pH 7.7. Each mL of brimonidine tartrate ophthalmic solution contains the active ingredient brimonidine tartrate 0.15% (1.5 mg/mL) with the inactive ingredients sodium carboxymethylcellulose; sodium borate; boric acid; sodium chloride; potassium chloride; calcium chloride; magnesium chloride; stabilized oxychloro complex 0.005% (0.05 mg/mL) as a preservative; water for injection; and hydrochloric acid and/or sodium hydroxide to adjust pH. brimonidine-structure

Bromfenac ophthalmic solution 0.09% is a sterile, topical, nonsteroidal anti-inflammatory drug (NSAID) for ophthalmic use. Each mL of bromfenac ophthalmic solution contains 1.035 mg bromfenac sodium (equivalent to 0.9 mg bromfenac free acid). Bromfenac sodium is designated chemically as sodium 2-amino-3-(4-bromobenzoyl) phenylacetate sesquihydrate, with an empirical formula of C 15 H 11 BrNNaO 3 • 3/2 H 2 O. The structural structure for bromfenac sodium is: Bromfenac sodium is a yellow to orange crystalline powder. The molecular weight of bromfenac sodium is 383.16. Bromfenac ophthalmic solution is supplied as a sterile aqueous 0.09% solution, with a pH of 8.3. The osmolality of bromfenac ophthalmic solution is approximately 300 mOsmol/kg. Each mL of bromfenac ophthalmic solution contains: Active : bromfenac sodium hydrate 0.1035% Preservative : benzalkonium chloride (0.05 mg/mL) Inactives : boric acid, disodium edetate (0.2 mg/mL), polysorbate 80 (1.5 mg/mL), povidone K-30 (20 mg/mL), sodium borate, and sodium sulfite anhydrous (2 mg/mL). sodium hydroxide may be used to adjust pH and water for injection USP. bromfenac-struc

Bromfenac ophthalmic solution 0.07% is a sterile, topical, nonsteroidal anti-inflammatory drug (NSAID) for ophthalmic use. Each mL of bromfenac ophthalmic solution contains 0.805 mg bromfenac sodium sesquihydrate (equivalent to 0.7 mg bromfenac free acid). The USAN name for bromfenac sodium sesquihydrate is bromfenac sodium. Bromfenac sodium is designated chemically as sodium-2-amino-3(4-bromobenzoyl)-phenylacetate sesquihydrate, with an empirical formula of C 15 H 11 BrNNaO 3 . 1.5 H 2 O. The chemical structure for bromfenac sodium sesquihydrate is: Bromfenac sodium is a bright orange to yellow powder. The molecular weight of bromfenac sodium is 383.17. Bromfenac ophthalmic solution is supplied as a sterile aqueous 0.07% solution, with a pH of 7.8. The osmolality of Bromfenac ophthalmic solution is approximately 300 mOsmol/kg. Each mL of bromfenac ophthalmic solution contains : Active: Each mL contains bromfenac sodium sesquihydrate 0.0805%, which is equivalent to bromfenac free acid 0.07%. Preservative: benzalkonium chloride 0.005% Inactives: boric acid, edetate disodium, povidone, sodium borate, sodium sulfite, tyloxapol, sodium hydroxide to adjust pH and water for injection, USP. bromfenac-structure

Bupropion hydrochloride, an antidepressant of the aminoketone class, is chemically unrelated to tricyclic, tetracyclic, selective serotonin re-uptake inhibitor, or other known antidepressant agents. Its structure closely resembles that of diethylpropion; it is related to phenylethylamines. It is designated as (±)-1-(3-chlorophenyl)-2-[(1,1-dimethylethyl)amino]-1-propanone hydrochloride. The molecular weight is 276.2. The molecular formula is C 13 H 18 ClNO•HCl. Bupropion hydrochloride powder is white, crystalline, and highly soluble in water. It has a bitter taste and produces the sensation of local anesthesia on the oral mucosa. The structural formula is: Bupropion hydrochloride tablets USP is supplied for oral administration as 75 mg (light orange) and 100 mg (light yellow) film-coated tablets. Each tablet contains the labeled amount of bupropion hydrochloride USP and the inactive ingredients: 75 mg -microcrystalline cellulose, hypromellose, low-substituted hydroxypropyl cellulose, magnesium stearate, titanium dioxide, ethyl cellulose, triacetin, iron oxide yellow, iron oxide red, FD&C Red No. 40, 100 mg - microcrystalline cellulose, hypromellose, low-substituted hydroxypropyl cellulose, magnesium stearate, titanium dioxide, ethyl cellulose , triacetin, iron oxide yellow. Structure

Candesartan cilexetil, a prodrug, is hydrolyzed to candesartan during absorption from the gastrointestinal tract. Candesartan is a selective AT 1 subtype angiotensin II receptor antagonist. Candesartan cilexetil, a nonpeptide, is chemically described as (±) - 1 - Hydroxyethyl 2 - ethoxy - 1 - [ p - ( o - 1 H - tetrazol - 5­ ylphenyl) benzyl] - 7 -benzimidazolecarboxylate, cyclohexyl carbonate (ester). Its empirical formula is C 33 H 34 N 6 O 6 , and its structural formula is: Candesartan cilexetil, USP is a white to off-white powder with a molecular weight of 610.67. It is practically insoluble in water and sparingly soluble in methanol. Candesartan cilexetil is a racemic mixture containing one chiral center at the cyclohexyloxycarbonyloxy ethyl ester group. Following oral administration, candesartan cilexetil undergoes hydrolysis at the ester link to form the active drug, candesartan, which is achiral. Candesartan cilexetil is available for oral use as tablets containing 4 mg, 8 mg, or 16 mg of candesartan cilexetil, USP and the following inactive ingredients: lactose monohydrate, corn starch, polyethylene glycol 8000, hydroxypropyl cellulose, carboxymethylcellulose calcium, and magnesium stearate. Ferric oxide red is added to the 8-mg and 16-mg tablets as a colorant. Structure

Candesartan cilexetil, a prodrug, is hydrolyzed to candesartan during absorption from the gastrointestinal tract. Candesartan is a selective AT 1 subtype angiotensin II receptor antagonist. Candesartan cilexetil, a nonpeptide, is chemically described as (±) - 1 - Hydroxyethyl 2 - ethoxy - 1 - [ p - ( o - 1 H - tetrazol - 5­ ylphenyl) benzyl] - 7 -benzimidazolecarboxylate, cyclohexyl carbonate (ester). Its empirical formula is C 33 H 34 N 6 O 6 , and its structural formula is: Candesartan cilexetil, USP is a white to off-white powder with a molecular weight of 610.67. It is practically insoluble in water and sparingly soluble in methanol. Candesartan cilexetil is a racemic mixture containing one chiral center at the cyclohexyloxycarbonyloxy ethyl ester group. Following oral administration, candesartan cilexetil undergoes hydrolysis at the ester link to form the active drug, candesartan, which is achiral. Candesartan cilexetil is available for oral use as tablet containing 32 mg of candesartan cilexetil, USP and the following inactive ingredients: mannitol, pullulan, carboxymethylcellulose calcium, corn starch, polyethylene glycol, hydroxypropyl cellulose, magnesium stearate and lactose monohydrate. The 32 mg tablet contains iron oxide red as a colorant. Structure

Carbamazepine USP, is an anticonvulsant and specific analgesic for trigeminal neuralgia, available for oral administration as tablets of 200 mg. Its chemical name is 5 H -dibenz[ b,f ]azepine-5-carboxamide, and its structural formula is: Carbamazepine USP is a white to off-white powder, soluble in alcohol, sparingly soluble in acetone and practically insoluble in water. Its molecular weight is 236.27. Inactive Ingredients : Microcrystalline cellulose, crospovidone, sodium lauryl sulfate, FD&C Red No. 40 Aluminium Lake, talc and magnesium stearate. FDA approved dissolution test specifications differ from the USP. structure

Carbamazepine, USP, is an anticonvulsant and specific analgesic for trigeminal neuralgia, available for oral administration as extended-release tablets of 100, 200, and 400 mg. Its chemical name is 5 H -dibenz[ b,f ]azepine-5-carboxamide, and its structural formula is: Carbamazepine, USP is a white to off-white powder, soluble in alcohol, sparingly soluble in acetone and practically insoluble in water. Its molecular weight is 236.27. Inactive Ingredients : cellulose acetate, dextrates, hydroxyethyl cellulose, hypromellose, magnesium stearate, mannitol, polyethylene glycol 8000 and sodium lauryl sulfate. Additionally, 100 mg tablet contains ferric oxide yellow, 200 mg tablet contains ferric oxide red and 400 mg tablet contains ferric oxide red as well as ferric oxide yellow. Tablets are imprinted with edible black ink containing ferrosoferric oxide, propylene glycol and shellac. FDA approved dissolution test specifications differ from USP. structure

Carbidopa and levodopa extended-release tablets, USP are an extended-release combination of carbidopa and levodopa for the treatment of Parkinson’s disease and syndrome. Carbidopa, USP , an inhibitor of aromatic amino acid decarboxylation, is a white to creamy white, odorless or practically odorless powder, freely soluble in 3N hydrochloric acid, slightly soluble in water and in methanol, practically insoluble in alcohol, in acetone, in chloroform and in ether, with a molecular weight of 244.24. It is designated chemically as (-)-L-α­hydrazino-α-methyl-β-(3,4-dihydroxybenzene) propanoic acid monohydrate. Its empirical formula is C 10 H 14 N 2 O 4 •H 2 O, and its structural formula is: Tablet content is expressed in terms of anhydrous carbidopa, which has a molecular weight of 226.24. Levodopa, USP, an aromatic amino acid, is a white to off-white, odorless , crystalline powder, slightly soluble in water, freely soluble in 3N hydrochloric acid and insoluble in alcohol with a molecular weight of 197.19. It is designated chemically as (-)-L-α-amino-β-(3,4-dihydroxybenzene) propanoic acid. Its empirical formula is C 9 H 11 NO 4 , and its structural formula is: Carbidopa and levodopa extended-release tablets, USP are supplied as extended-release tablets containing either 25 mg of carbidopa and 100 mg of levodopa, or 50 mg of carbidopa and 200 mg of levodopa. Inactive ingredients are hydroxypropyl cellulose, magnesium stearate, and hypromellose. Carbidopa and levodopa extended-release tablets USP, 25 mg/100 mg and carbidopa and levodopa extended-release tablets USP, 50 mg/200 mg also contain FD&C Blue #2 Aluminium Lake and FD&C Red #40 Aluminium Lake. The 25 mg/100 mg tablet is supplied as an oval shaped mottled tablet that is dappled-purple in color and is debossed with “L519” on one side and plain on the other. The 50 mg/200 mg tablet is supplied as an oval shaped mottled tablet that is dappled-purple in color and is debossed with “L520” on one side and plain on the other. Carbidopa and levodopa extended-release tablets, USP are polymeric-based drug delivery system that controls the release of carbidopa and levodopa as it slowly erodes. Carbidopa and levodopa extended-release tablet 25 mg/100 mg is available to facilitate titration when 100 mg steps are required. FDA approved dissolution specifications differs from the USP dissolution specifications. Structure-Carbidopa Structure-Levodopa

Carboprost tromethamine injection, USP is a sterile solution, an oxytocic, contains the tromethamine salt of the (15S)­-15 methyl analogue of naturally occurring prostaglandin F2α in a solution suitable for intramuscular injection. Carboprost tromethamine is the established name for the active ingredient in carboprost tromethamine injection, USP. Four other chemical names are: 1. (15S)-15-methyl prostaglandin F2α tromethamine salt 2. 7-(3α,5α-dihydroxy-2ß-[(3S)-3-hydroxy-3-methyl-trans-1-octenyl]-1α­-cyclopentyl]-cis-5-heptenoic acid compound with 2-amino-2-(hydroxymethyl)­1,3-propanediol 3. (15S)-9α,11α,15-trihydroxy-15-methylprosta-cis-5, trans-13-dienoic acid tromethamine salt 4. (15S)-15-methyl PGF2α-THAM The structural formula is represented below: The molecular formula is C25H47O8N. The molecular weight of carboprost tromethamine is 489.64. It is a white to slightly off-white crystalline powder. It generally melts between 95° and 105° C, depending on the rate of heating. Carboprost tromethamine dissolves readily in water at room temperature at a concentration greater than 75 mg/mL. Each mL of carboprost tromethamine injection, USP sterile solution contains carboprost tromethamine equivalent to 250 mcg of carboprost, 83 mcg tromethamine, 9 mg sodium chloride, and 9.45 mg benzyl alcohol added as preservative. When necessary, pH is adjusted with sodium hydroxide and/or hydrochloric acid. The solution is sterile. carboprost-structure

The active ingredient in carmustine for injection, USP is a nitrosourea with the chemical name 1,3-bis(2-chloroethyl)-1-nitrosourea and a molecular weight of 214.06. The drug product is supplied as sterile lyophilized pale yellow flakes or a congealed mass, and it is highly soluble in alcohol and lipids, and poorly soluble in water. Carmustine for injection, USP is administered by intravenous infusion after reconstitution, as recommended. The structural formula of carmustine is: Carmustine for injection, USP is available in 100-mg single dose vials of lyophilized material. Sterile diluent for constitution of carmustine for injection, USP is co-packaged with the active drug product for use in constitution of the lyophile. The diluent is supplied in a vial containing 3 mL of Dehydrated Alcohol Injection, USP. carmustine-structure

Chlordiazepoxide hydrochloride and clidinium bromide capsules, USP are a fixed-combination of chlordiazepoxide hydrochloride, a benzodiazepine, and clidinium bromide, an anticholinergic. Each chlordiazepoxide hydrochloride and clidinium bromide capsule, USP contains the active ingredients 5 mg chlordiazepoxide hydrochloride, USP and 2.5 mg clidinium bromide, USP. Each capsule also contains the inactive ingredients lactose monohydrate, corn starch, talc, titanium dioxide, FD&C Green 3, D&C Yellow 10 and gelatin. The empty hard gelatin capsule shells are printed with edible black ink containing shellac, propylene glycol, black iron oxide and potassium hydroxide. Chlordiazepoxide hydrochloride, USP is 7-chloro-2-methylamino-5-phenyl-3H-1,4-benzodiazepine 4-oxide hydrochloride. A white or practically white crystalline powder, it is soluble in water, sparingly soluble in alcohol and insoluble in solvent hexane. It is unstable in solution and the powder must be protected from light. The molecular weight is 336.22. The structural formula of chlordiazepoxide hydrochloride, USP is as follows: Clidinium bromide, USP is a synthetic anticholinergic agent which has been shown in experimental and clinical studies to have antispasmodic and antisecretory effects on the gastrointestinal tract. Structurally clidinium bromide, USP is: Product meets USP Dissolution Test 2. chlordiazepoxide-clidinium-str1.jpg chlordiazepoxide-clidinium-str2.jpg

Chlorpromazine hydrochloride, USP, a dimethylamine derivative of phenothiazine, has a chemical formula of 2-chloro-10-[3-(dimethylamino) propyl] phenothiazine monohydrochloride. It is available in tablets for oral administration. It has the following structural formula: Chlorpromazine hydrochloride, USP occurs as white to creamy white, crystalline powder. Each tablet for oral administration contains 10 mg, 25 mg, 50 mg, 100 mg, or 200 mg of chlorpromazine hydrochloride, USP. Inactive ingredients: lactose monohydrate, crospovidone, sodium starch glycolate (10 mg and 25 mg), microcrystalline cellulose (50 mg, 100 mg and 200 mg) and sodium lauryl sulfate (50 mg, 100 mg and 200 mg) povidone K-30, magnesium stearate, hypromellose, titanium dioxide, talc, polyethylene glycol 6000 (10 mg and 25 mg) and polyethylene glycol 3350 (50 mg, 100 mg and 200 mg). Additionally, 50 mg, 100 mg and 200 mg strengths also contain polyvinyl alcohol, D&C Yellow #10 Aluminium Lake, D&C Red #30 Aluminium Lake, FD&C Blue #2 Aluminium Lake. The tablets are imprinted with edible black ink. The edible black ink contains shellac, black iron oxide and propylene glycol. FDA approved dissolution test specifications differ from USP. structure

Chlorthalidone an oral antihypertensive/diuretic. It is a monosulfamyl diuretic that differs chemically from thiazide diuretics in that a double-ring system is incorporated in its structure. It is 2-Chloro-5(1-hydroxy-3-oxo-1- isoindolinyl) benzenesulfonamide with the following structural formula: Molecular Formula: C 14 H 11 ClN 2 O 4 S Molecular weight: 338.76 Chlorthalidone, USP is practically insoluble in water and dichloromethane; soluble in acetone and methanol; slightly soluble in 96% ethanol. Chlorthalidone tablets, USP are available containing either 25 mg or 50 mg of chlorthalidone, USP and the following inactive ingredients: microcrystalline cellulose, pregelatinized starch (corn), sodium starch glycolate, colloidal silicon dioxide, stearic acid and colorants D&C Yellow No.10 Aluminum Lake and FD&C Blue No.1 Aluminum Lake. structure

Clindamycin phosphate gel USP contains clindamycin phosphate, USP, at a concentration equivalent to 10 mg clindamycin per gram. Clindamycin phosphate is a water soluble ester of the semi-synthetic antibiotic produced by a 7(S)-chloro-substitution of the 7(R)-hydroxyl group of the parent antibiotic lincomycin. The gel contains allantoin, carbopol 974P, methylparaben, polyethylene glycol 400, propylene glycol, sodium hydroxide, and purified water. The structural formula is represented below: The chemical name for clindamycin phosphate is Methyl 7-chloro-6,7,8-trideoxy-6-(1-methyl- trans -4-propyl-L-2-pyrrolidinecarboxamido)-1-thio-L- threo -α-D- galacto -octopyranoside 2-(dihydrogen phosphate). structure