sciegen pharmaceuticals, inc. - Medication Listings

Atorvastatin calcium is an inhibitor of 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase. Atorvastatin calcium, USP is [R-(R*,R*)]-2-(4-fluorophenyl)-ß,δ-dihydroxy-5-(1-methylethyl)-3-phenyl-4-[(phenylamino) carbonyl]-1H-pyrrole-1-heptanoic acid, calcium salt (2:1) trihydrate. The empirical formula of atorvastatin calcium is (C 33 H 34 FN 2 O 5 ) 2 Ca•3H 2 O and its molecular weight is 1209.42. Its structural formula is: Atorvastatin calcium, USP is a white to off-white crystalline powder. Atorvastatin calcium, USP is freely soluble in methanol and insoluble in aqueous solutions of pH 4 and below. Atorvastatin calcium tablets, USP for oral administration contain 10 mg, 20 mg, 40 mg, or 80 mg atorvastatin and the following inactive ingredients: anhydrous lactose, NF; colloidal silicon dioxide, NF; copovidone, NF; croscarmellose sodium, NF; magnesium stearate, NF; mannitol, USP; silicified microcrystalline cellulose, NF; sodium bicarbonate, USP; sodium carbonate anhydrous, NF; sodium lauryl sulfate, NF; hypromellose, polyethylene glycol, talc, titanium dioxide, and iron oxide yellow. This product meets the requirements of USP Dissolution Test-2. chemical-structure

Metformin Hydrochloride Tablets, USP contain the antihyperglycemic agent metformin, which is a biguanide, in the form of monohydrochloride. The chemical name of metformin hydrochloride is N,N -dimethylimidodicarbonimidic diamide hydrochloride. The structural formula is as shown below Metformin hydrochloride is a white crystalline compound with a molecular formula of C 4 H 11 N 5 • HCl and a molecular weight of 165.63. Metformin hydrochloride is freely soluble in water, slightly soluble in alcohol, practically insoluble in acetone and in methylene hydrochloride. The pK a of metformin is 12.4. The p H of a 1% aqueous solution of metformin hydrochloride is 6.68. Metformin Hydrochloride Tablets contain 500 mg, 850 mg, or 1000 mg of metformin hydrochloride, which is equivalent to 389.93 mg, 662.88 mg, 779.86 mg metformin base, respectively. Each tablet contains the inactive ingredients pregelatinized starch (maize), povidone, crospovidone, magnesium stearate. In addition, the coating for the tablets contains hypromellose, polyethylene glycol, titanium dioxide and flavoring agent contains dextrose, ethyl alcohol, gum arabic, propylene glycol and silicon dioxide. Formula

The active ingredient in gabapentin capsules and tablets, USP is gabapentin, which has the chemical name 1-(aminomethyl)cyclohexaneacetic acid. The molecular formula of gabapentin is C 9 H 17 NO 2 and the molecular weight is 171.24. The structural formula of gabapentin is: Gabapentin, USP is a white to off-white crystalline solid with a pK a1 of 4.72±0.10 and a pK a2 of 10.27±0.29. It is freely soluble in water and both basic and acidic aqueous solutions. The log of the partition coefficient is -1.083±0.235 at 25°C temperature. Each gabapentin capsule contains 100 mg, 300 mg or 400 mg of gabapentin, USP and the following inactive ingredients: pregelatinized starch (maize), and talc. The 100 mg capsule shell contains gelatin, sodium lauryl sulfate (SLS) and titanium dioxide. The 300 mg capsule shell contains gelatin, titanium dioxide, FD&C Red 40, D&C Yellow 10, and sodium lauryl sulfate (SLS). The 400 mg capsule shell contains gelatin, titanium dioxide, sodium lauryl sulfate (SLS), D&C Yellow 10, and FD&C Red 40. The imprinting ink contains shellac, dehydrated alcohol, isopropyl alcohol, butyl alcohol, propylene glycol, strong ammonia solution, black iron oxide, and potassium hydroxide. Each gabapentin tablet contains 600 mg or 800 mg of gabapentin, USP and the following inactive ingredients: poloxamer 407, mannitol, magnesium stearate, hydroxypropyl cellulose, talc, copovidone, crospovidone, colloidal silicon dioxide and coating agent contains hypromellose, titanium dioxide, polyethylene glycol and talc. Gabapentin Structural Formula

The active ingredient in gabapentin capsules and tablets, USP is gabapentin, which has the chemical name 1-(aminomethyl)cyclohexaneacetic acid. The molecular formula of gabapentin is C 9 H 17 NO 2 and the molecular weight is 171.24. The structural formula of gabapentin is: Gabapentin, USP is a white to off-white crystalline solid with a pK a1 of 4.72±0.10 and a pK a2 of 10.27±0.29. It is freely soluble in water and both basic and acidic aqueous solutions. The log of the partition coefficient is -1.083±0.235 at 25°C temperature. Each gabapentin capsule contains 100 mg, 300 mg or 400 mg of gabapentin, USP and the following inactive ingredients: pregelatinized starch (maize), and talc. The 100 mg capsule shell contains gelatin, sodium lauryl sulfate (SLS) and titanium dioxide. The 300 mg capsule shell contains gelatin, titanium dioxide, FD&C Red 40, D&C Yellow 10, and sodium lauryl sulfate (SLS). The 400 mg capsule shell contains gelatin, titanium dioxide, sodium lauryl sulfate (SLS), D&C Yellow 10, and FD&C Red 40. The imprinting ink contains shellac, dehydrated alcohol, isopropyl alcohol, butyl alcohol, propylene glycol, strong ammonia solution, black iron oxide, and potassium hydroxide. Each gabapentin tablet contains 600 mg or 800 mg of gabapentin, USP and the following inactive ingredients: poloxamer 407, mannitol, magnesium stearate, hydroxypropyl cellulose, talc, copovidone, crospovidone, colloidal silicon dioxide and coating agent contains hypromellose, titanium dioxide, polyethylene glycol and talc. Gabapentin Structural Formula

Gabapentin tablets (Once-Daily) contain gabapentin, a gamma-aminobutyric acid (GABA) analogue, as the active pharmaceutical ingredient. Gabapentin’s chemical name is 1-(aminomethyl) cyclohexaneacetic acid; with a molecular formula of C 9 H 17 NO 2 and a molecular weight of 171.24 g/mol. Gabapentin chemical structural formula is: Gabapentin is a white to off-white crystalline solid with a pKa1 of 3.7 and a pKa2 of 10.7. It is freely soluble in water and acidic and basic solutions. The log of the partition coefficient (n-octanol/ 0.05M phosphate buffer) at pH 7.4 is -1.25. Gabapentin tablets (Once-Daily) are intended for oral administration and is supplied as tablets containing 300 mg, 600 mg of gabapentin USP. Each 300 mg tablet contains the inactive ingredients Copovidone NF, Hypromellose USP, Magnesium Stearate NF, Microcrystalline Cellulose NF, Polyethylene Oxide NF, and White film coating (Polyethylene Glycol, Polyvinyl Alcohol, Talc, and Titanium Oxide). Each 600 mg tablet contains the inactive ingredients Copovidone NF, Hypromellose USP, Magnesium Stearate NF, Polyethylene Oxide NF, and Beige film coating (Polyethylene Glycol, Polyvinyl Alcohol, Talc, Titanium Oxide, Iron Oxide Yellow, and Iron Oxide Red). Image

Hydrochlorothiazide is a diuretic and antihypertensive. It is the 3,4-dihydro derivative of chlorothiazide. It is chemically designated as 6-chloro-3,4-dihydro- 2H -1,2,4-benzothiadiazine- 7-sulfonamide 1,1-dioxide and has the following structural formula: Hydrochlorothiazide, USP is a white, or practically white, crystalline powder which is very slightly soluble in water, freely soluble in sodium hydroxide solution, in n -butylamine, and in dimethylformamide; sparingly soluble in methanol; insoluble in ether, in chloroform and in dilute mineral acids. Each tablet for oral administration contains 25 mg and 50 mg hydrochlorothiazide, USP. In addition, each tablet contains the following inactive ingredients:microcrystalline cellulose, NF, lactose anhydrous NF, pregelatinized starch NF, sodium lauryl sulfate NF, silicon dioxide NF and magnesium stearate, NF. hydrochlorothiazide-structure

Hydrochlorothiazide (hydrochlorothiazide, USP 12.5 mg) 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 capsules, USP are supplied as 12.5 mg capsules for oral use. Inactive ingredients: colloidal silicon dioxide, corn starch, lactose monohydrate, magnesium stearate. The hard gelatin shell consists of gelatin, titanium dioxide, sodium lauryl sulfate, FD&C Blue #1, FD&C Red #3. The capsules are printed with black ink containing shellac, dehydrated alcohol, isopropyl alcohol, butyl alcohol, propylene glycol, strong ammonia solution, black iron oxide, and potassium hydroxide. figure-01

Sertraline hydrochloride tablet USP contains sertraline hydrochloride USP, an SSRI. Sertraline hydrochloride USP has a molecular weight of 342.7 and has the following chemical name: (1S-cis)-4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-N-methyl-1-naphthalenamine hydrochloride. The empirical formula C 17 H 17 NCl 2 •HCl is represented by the following structural formula: Sertraline hydrochloride USP is a white or off-white crystalline powder that is Sparingly soluble or slightly soluble in absolute alcohol, slightly soluble in water and in isopropanol and slightly or very slightly soluble in acetone. Sertraline hydrochloride tablets, USP for oral administration contain 28.0 mg, 56.0 mg and 111.9 mg sertraline hydrochloride equivalent to 25 mg, 50 mg and 100 mg of sertraline and the following inactive ingredients: microcrystalline cellulose, dibasic calcium phosphate dihydrate, colloidal silicon dioxide, sodium starch glycolate, hydroxypropyl cellulose, magnesium stearate, polysorbate 80, hypromellose, titanium dioxide, polyethylene glycol, ferrosoferric oxide (in 25mg tablet), FD & C Blue #2 aluminum lake (in 25mg and 50 mg tablet) and iron oxide yellow (in 25mg and 100mg tablet). Meets USP dissolution test 3. chemical-structure

Celecoxib capsule is a nonsteroidal anti-inflammatory drug, available as capsules containing 50 mg, 100 mg, 200 mg and 400 mg celecoxib for oral administration. The chemical name is 4-[5-(4-methylphenyl)-3-(trifluoromethyl)-1H-pyrazol-1-yl] benzenesulfonamide and is a diaryl-substituted pyrazole. The molecular weight is 381.38. Its molecular formula is C 17 H 14 F 3 N 3 O 2 S, and it has the following chemical structure: Celecoxib is a white to off-white powder with a pKa of 11.1 (sulfonamide moiety). Celecoxib is hydrophobic (log P is 3.5) and is practically insoluble in aqueous media at physiological pH range. The inactive ingredients in celecoxib capsules include: croscarmellose sodium, gelatin, lactose monohydrate, magnesium stearate, povidone, sodium lauryl sulfate and titanium dioxide. Details of non-volatile components of the imprinting ink are given below. 50 mg capsule contains shellac, propylene glycol, sodium hydroxide, titanium dioxide, povidone and FD&C Red #40 aluminum lake. 100 mg capsule contains shellac, propylene glycol, ammonia and FD & C Blue No. # 2 aluminum lake. 200 mg capsule contains shellac, propylene glycol, ammonia and yellow iron oxide. 400 mg capsule contains shellac, propylene glycol, ammonia, yellow iron oxide, and FD & C Blue No. # 1 aluminum lake. structural formula

Fluoxetine hydrochloride is a selective serotonin reuptake inhibitor for oral administration. 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 with a solubility of 14 mg/mL in water. Each scored tablet contains fluoxetine hydrochloride equivalent to 60 mg (194 µmol) of fluoxetine. In addition, each scored tablet also contains the following inactive ingredients: microcrystalline cellulose, corn starch (maize), povidone, mannitol, magnesium stearate, ascorbic acid, hypromellose, titanium dioxide, polyethylene glycol and FD&C Blue #2/indigo carmine aluminium lake. Chemical Structure

Fluoxetine tablets, USP are 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 with a solubility of 14 mg/mL in water. Each tablet contains fluoxetine hydrochloride equivalent to 10 mg (32.3 μmol), 20 mg (64.7 μmol) of fluoxetine. In addition, each tablet also contains the following inactive ingredients: microcrystalline cellulose, pregelatinized starch, crospovidone, colloidal silicon dioxide, magnesium stearate and the coating agent contains hypromellose, titanium dioxide and polyethylene glycol. structure

Fluoxetine capsules, USP are a selective serotonin reuptake inhibitor for oral administration. 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 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 the following inactive ingredients: pregelatinized starch (maize [corn]), colloidal silicon dioxide, gelatin, sodium lauryl sulphate, FD&C Blue #1 and titanium dioxide. In addition 20 mg capsules also contains D&C Yellow #10 and 10 mg capsules also contains FD&C Yellow #6. The capsules are printed with edible ink containing black iron oxide, potassium hydroxide, propylene glycol, shellac and strong ammonia solution. Chemical Structure

Fluoxetine hydrochloride is a selective serotonin reuptake inhibitor for oral administration. 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 with a solubility of 14 mg/mL in water. Each scored tablet contains fluoxetine hydrochloride equivalent to 60 mg (194 μmol) of fluoxetine. In addition, each scored tablet also contains the following inactive ingredients: microcrystalline cellulose, corn starch (maize), povidone, mannitol, magnesium stearate, hypromellose, titanium dioxide and polyethylene glycol. Chemical Structure

Clopidogrel bisulfate is a thienopyridine class inhibitor of P2Y 12 ADP platelet receptors. Chemically it is methyl (+)-( S )-α-(2-chlorophenyl)-6,7-dihydrothieno[3,2-c]pyridine-5(4 H )-acetate sulfate (1:1). The empirical formula of clopidogrel bisulfate is C 16 H 16 ClNO 2 S•H 2 SO 4 and its molecular weight is 419.9. The structural formula is as follows: Clopidogrel bisulfate, USP is a white to off-white powder. It is freely soluble in methanol, practically insoluble in ether. It has a specific optical rotation of about +56°. Clopidogrel for oral administration is provided as either pink colored, round shaped, biconvex, de-bossed, film coated tablets containing 97.875 mg of clopidogrel bisulfate which is the molar equivalent of 75 mg of clopidogrel base or pink colored, modified oval shaped, de-bossed film coated tablets containing 391.5 mg of clopidogrel bisulfate which is the molar equivalent of 300 mg of clopidogrel base. Each tablet contains microcrystalline cellulose, mannitol, croscarmellose sodium, hydroxy propyl cellulose, hydroxy propyl methyl cellulose and hydrogenated castor oil as inactive ingredients. The film coating contains hypromellose, titanium dioxide, polyethylene glycol, red iron oxide and yellow iron oxide. structure

Rosuvastatin is a 3-hydroxy-3-methylglutaryl coenzyme A (HMG CoA)-reductase inhibitor. The chemical name for rosuvastatin calcium, USP is bis[(E)-7-[4-(4-fluorophenyl)-6-isopropyl-2­ [methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoic acid] calcium salt with the following structural formula: The empirical formula for rosuvastatin calcium is (C 22 H 27 FN 3 O 6 S) 2 Ca and the molecular weight is 1001.14. Rosuvastatin calcium, USP is a white to almost white amorphous powder that is sparingly soluble in water and methanol, and slightly soluble in ethanol. Rosuvastatin calcium is a hydrophilic compound with a partition coefficient (octanol/water) of 1.4 at pH of 7.0. Rosuvastatin tablets, USP for oral use contain rosuvastatin 5 mg, 10 mg, 20 mg, or 40 mg (equivalent to 5.2 mg, 10.4 mg, 20.8 mg, and 41.6 mg rosuvastatin calcium, USP) and the following inactive ingredients: Each tablet contains: crospovidone, dibasic calcium phosphate dihydrate, hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, red ferric oxide, triacetin and titanium dioxide. structural formula

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, USP is off white to white crystalline powder, soluble in chloroform, water and in glacial acetic acid, slightly soluble in alcohol and acetonitrile, practically insoluble in ethyl acetate and -nHexane. Donepezil hydrochloride is available for oral administration in film-coated tablets containing 5 mg, 10 mg, or 23 mg of donepezil hydrochloride. Inactive ingredients in 5 mg and 10 mg tablets are Microcrystalline Cellulose, Lactose Monohydrate, Pregelatinized Starch (maize), Low substituted Hydroxy Propyl Cellulose, Magnesium Stearate. The film coating contains talc, hypromellose, polyethylene glycol / Macrogol and titanium dioxide. Additionally, the 10 mg tablet contains iron oxide yellow (synthetic, mineral) as a coloring agent. 01

Naproxen tablets, USP are nonsteroidal anti-inflammatory drugs and available as follows: Naproxen tablets, USP are available as light yellow round shaped tablets containing 250 mg naproxen, light yellow capsule shaped tablets containing 375 mg naproxen, and light yellow oblong shaped tablets containing 500 mg naproxen for oral administration. Naproxen is a propionic acid derivative related to the arylacetic acid group of nonsteroidal anti-inflammatory drugs. The chemical name for naproxen is (S)-6-methoxy-α-methyl-2-naphthaleneacetic acid. Naproxen has a molecular weight of 230.26 and a molecular formula of C 14 H 14 O 3 . It has the following structural formula: Naproxen is white or almost white crystalline powder. It is insoluble in water, soluble in chloroform, dehydrated ethanol and methanol. Sparingly soluble in ether. The octanol/water partition coefficient of Naproxen at pH < 2.18 is 3.18. Each naproxen tablet, USP contains the following inactive ingredients: croscarmellose sodium, yellow iron oxide, povidone and magnesium stearate Structural Formula

Amlodipine and olmesartan medoxomil provided as a tablet for oral administration, is a combination of the calcium channel blocker (CCB) amlodipine besylate, USP and the angiotensin II receptor blocker (ARB) olmesartan medoxomil, USP. The amlodipine besylate, USP component of amlodipine and olmesartan medoxomil tablets, USP is chemically described as 3-ethyl-5-methyl (±)-2-[(2-aminoethoxy)methyl]-4-(2-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. Olmesartan medoxomil, USP a prodrug, is hydrolyzed to olmesartan during absorption from the gastrointestinal tract. The olmesartan medoxomil, USP component of amlodipine and olmesartan medoxomil tablets, USP is chemically described as 2,3-dihydroxy-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, USP is: The structural formula for olmesartan medoxomil, USP is: Amlodipine and olmesartan medoxomil tablets, USP contain amlodipine besylate, USP a white or almost white powder, and olmesartan medoxomil, USP a white to off-white crystalline powder. The molecular weights of amlodipine besylate, USP and olmesartan medoxomil, USP are 567.1 and 558.59, respectively. Amlodipine besylate, USP is slightly soluble in 2-propanol, water, freely soluble in methanol and sparingly soluble in ethanol. Olmesartan medoxomil, USP is practically insoluble in water and sparingly soluble in methanol. Each tablet of amlodipine and olmesartan medoxomil also contains the following inactive ingredients: microcrystalline cellulose, pregelatinized starch, croscarmellose sodium, colloidal silicon dioxide and magnesium stearate. The color coatings contain polyvinyl alcohol, macrogol/ polyethylene glycol 3350, macrogol/ polyethylene glycol 8000, titanium dioxide, talc, iron oxide yellow (5/40 mg, 10/20 mg, 10/40 mg tablets), iron oxide red (10/20 mg and 10/40 mg tablets), and iron oxide black (10/40 mg tablets). USP Dissolution Test is pending. Amlodipine Chemical Structure Olmesartan Chemical Structure

Aripiprazole is an atypical antipsychotic drug that is available as aripiprazole tablets. Aripiprazole USP is 7-[4-[4-(2,3-dichlorophenyl)-1piperazinyl]butoxy]-3,4-dihydrocarbostyril. The empirical formula is C 23 H 27 C l2 N 3 O 2 and its molecular weight is 448.39. The chemical structure is: Aripiprazole Tablets, USP are available in 2 mg, 5 mg, 10 mg, 15 mg, 20 mg, and 30 mg strengths. Inactive ingredients include corn starch, colloidal silicon dioxide, lactose monohydrate, microcrystalline cellulose, magnesium stearate, povidone. Colorants include ferric oxide (yellow or red) and FD&C Blue No. 2 Aluminum Lake. FDA approved dissolution test specifications differ from USP. aripiprazole-structure.jpeg

Aripiprazole is an atypical antipsychotic 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 448.38. The chemical structure is: Aripiprazole Orally Disintegrating Tablets are available in 10 mg and 15 mg strengths. Inactive ingredients include aspartame, colloidal silicon dioxide, crospovidone, flavor vanilla (natural flavors), magnesium stearate, mannitol, microcrystalline cellulose, pregelatinized starch, sucralose, silicon dioxide, sodium starch glycolate. Colorant include ferric oxide red. structural formula

Aripiprazole is an atypical antipsychotropic drug that is available as aripiprazole tablets. Aripiprazole USP is 7-[4-[4-(2,3-dichlorophenyl)-1piperazinyl]butoxy]-3,4-dihydrocarbostyril. The empirical formula is C 23 H 27 C l2 N 3 O 2 and its molecular weight is 448.39. The chemical structure is: Aripiprazole Tablets, USP are available in 2 mg, 5 mg, 10 mg, 15 mg, 20 mg, and 30 mg strengths. Inactive ingredients include corn starch, colloidal silicon dioxide, isopropyl alcohol, lactose monohydrate, microcrystalline cellulose, magnesium stearate, povidone. Colorants include ferric oxide (yellow or red) and FD&C Blue No. 2 Aluminum Lake. FDA approved dissolution test specifications differ from USP. structural formula

Benztropine mesylate is a synthetic compound containing structural features found in atropine and diphenhydramine. It is designated chemically as 3α-(Diphenylmethoxy)-1αH, 5αH-tropane methanesulfonate. Its molecular formula is C 21 H 25 NO•CH 4 O 3 S, and its structural formula is: Benztropine mesylate is a crystalline white powder, very soluble in water, and has a molecular weight of 403.54. Each benztropine mesylate tablet USP for oral administration contains benztropine mesylate USP 0.5 mg, 1 mg or 2 mg. Inactive ingredients: anhydrous lactose, croscarmellose sodium, FD&C Red #40 Aluminum Lake (2mg), FD&C Yellow #5 Aluminum Lake (1mg), povidone k-29/32, and magnesium stearate. Structure

Bupropion hydrochloride extended-release tablets, USP (SR) are a non-nicotine aid to smoking cessation. Bupropion is chemically unrelated to nicotine or other agents currently used in the treatment of nicotine addiction. Initially developed and marketed as an antidepressant (WELLBUTRIN [bupropion hydrochloride] tablets and WELLBUTRIN SR [bupropion hydrochloride] sustained-release tablets), Bupropion hydrochloride extended-release tablets, USP (SR) is also 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 USP is white powder, and soluble in 0.1N Hydrochloric acid, in alcohol (96.0%) and in water. It has a bitter taste and produces the sensation of local anesthesia on the oral mucosa. The structural formula is: Bupropion hydrochloride extended-release tablets, USP (SR) are supplied for oral administration as 150-mg (purple), film-coated, sustained-release tablets. Each tablet contains the labeled amount of bupropion hydrochloride USP and the inactive ingredients: copovidone, cysteine hydrochloride, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polysorbate 80, titanium dioxide, FD&C Blue No.2 Lake and FD&C Red No. 40 Lake. In addition, flavoring agent contains dextrose, ethyl alcohol, gum arabic, propylene glycol and silicon dioxide. Bupropion hydrochloride extended-release tablets, USP (SR) meets USP dissolution Test 2. bupropion hydrochloride chemical structure

Bupropion hydrochloride extended-release tablets, USP (SR), 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, powder, soluble in 0.1N HCl, alcohol 96% and in water. It has a bitter taste and produces the sensation of local anesthesia on the oral mucosa. The structural formula is: Bupropion hydrochloride extended-release tablets, USP (SR), are supplied for oral administration as 100 mg (blue), 150 mg (purple), and 200 mg (pink), film-coated, extended-release tablets. Each tablet contains the labeled amount of bupropion hydrochloride and the inactive ingredients: copovidone, cysteine hydrochloride, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polysorbate 80 and titanium dioxide. In addition, the 100 mg tablet contains FD&C Blue No. 1 Brilliant Blue FCF Aluminium Lake, the 150 mg tablet contains FD&C Blue No. 2 Indigo Carmine Aluminium Lake and FD&C Red No. 40 Allura Red AC Aluminium Lake, and the 200 mg tablet contains FD&C Red No. 40 Allura Red AC Aluminium Lake. In addition, flavoring agent contains dextrose, ethyl alcohol, gum arabic, propylene glycol, and silicon dioxide. Bupropion hydrochloride extended-release tablets, USP (SR) meets USP Dissolution Test 2. Chemical 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, crystalline compound, slightly soluble in water, with a molecular weight of 244.24. It is designated chemically as (-)-L-α-hydrazino-α-methyl-β-(3,4-dihydroxybenzene) propanoic acid monohydrate. Its molecular 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 226.23. Levodopa, USP an aromatic amino acid, is a white, crystalline compound, slightly soluble in water, with a molecular weight of 197.19. It is designated chemically as (-)-L-α-amino-β-(3,4-dihydroxybenzene) propanoic acid. Its molecular 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, hypromellose and also contain FD&C Blue #2. The 25 mg/100 mg tablet is supplied as a light blue, mottled, oval, uncoated tablets debossed with 'SG' on one side and '460' on the other side. The 50 mg/200 mg tablet is supplied as a light blue, mottled, oval, uncoated tablets debossed with 'SG' on one side and '461' on the other side. 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 test specifications differ from USP. Carbidopa Chemical Structure Levodopa Chemical Structure

Carbidopa and Levodopa tablet, USP is a 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, crystalline compound, slightly soluble in water, with a molecular weight of 244.24. It is designated chemically as (-)-L-α-hydrazino-α-methyl-β-(3,4-dihydroxybenzene) propanoic acid monohydrate. Its molecular 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 226.23. Levodopa, USP an aromatic amino acid, is a white, crystalline compound, slightly soluble in water, with a molecular weight of 197.19. It is designated chemically as (-)-L-α-amino-β-(3,4- dihydroxybenzene) propanoic acid. Its molecular formula is C 9 H 11 NO 4 , and its structural formula is: Carbidopa and Levodopa is supplied as tablets in three strengths: Carbidopa and Levodopa tablets, USP 10 mg/100 mg, containing 10 mg of carbidopa and 100 mg of levodopa. Carbidopa and Levodopa tablets, USP 25 mg/100 mg, containing 25 mg of carbidopa and 100 mg of levodopa. Carbidopa and Levodopa tablets, USP 25 mg/250 mg, containing 25 mg of carbidopa and 250 mg of levodopa. Inactive ingredients are hydroxypropyl cellulose, pregelatinized starch, crospovidone, microcrystalline cellulose, and magnesium stearate. Carbidopa and levodopa tablets, USP 10 mg/100 mg and 25 mg/250 mg also contain FD&C Blue #2. Carbidopa and levodopa tablets, USP 25 mg/100 mg also contain D&C Yellow #10. Carbidopa Chemical Structure Levodopa Chemical Structure

Carisoprodol tablets, USP are available as 350 mg round, white tablets. Carisoprodol, USP is a white, crystalline powder, having a mild, characteristic odor. It is very slightly soluble in water; freely soluble in alcohol, in chloroform, and in acetone; and its solubility is practically independent of pH. Carisoprodol is present as a racemic mixture. Chemically, carisoprodol is (±)-2-Methyl-2-propyl-1,3-propanediol carbamate isopropylcarbamate and the molecular formula is C 12 H 24 N 2 O 4 , with a molecular weight of 260.33. The structural formula is: Other ingredients in the Carisoprodol tablets USP, 350 mg include microcrystalline cellulose, lactose monohydrate, pregelatinized starch (maize), croscarmellose sodium, povidone, silicon dioxide and magnesium stearate. structural formula of CARISOPRODOL

Clotrimazole Topical Solution USP, 1% contains 10 mg clotrimazole USP, a synthetic antifungal agent having the chemical name 1-(o-Chloro-α,α-diphenylbenzyl) imidazole with the following structural formula: Molecular Formula C 22 H 17 ClN 2 Molecular Weight 344.85 Clotrimazole is an odorless, white crystalline substance. It is practically insoluble in water, sparingly soluble in ether and very soluble in polyethylene glycol 400, ethanol, and chloroform. Each mL of Clotrimazole Topical Solution, USP 1% contains 10 mg clotrimazole USP in a nonaqueous vehicle of polyethylene glycol 400. Chemical Structure

Diltiazem hydrochloride is a nondihydropyridine calcium channel blocker (slow channel blocker or calcium antagonist). Chemically, diltiazem hydrochloride is 1,5-benzothiazepin-4(5H)-one, 3-(acetyloxy)-5-[2¬ (dimethylamino)ethyl]-2, 3-dihydro-2-(4-methoxyphenyl)-, monohydrochloride, (+)-cis-. The structural formula is: Diltiazem hydrochloride is a white, odorless, crystalline powder or small crystals. It is freely soluble in chloroform, in formic acid, in methanol, and in water, sparingly soluble in dehydrated alcohol, insoluble in ether. It has a molecular weight of 450.99. Diltiazem hydrochloride extended-release tablets are formulated as a once-a-day extended-release tablet for oral administration containing 120 mg, 180 mg, 240 mg, 300 mg, 360 mg or 420 mg of diltiazem hydrochloride. Tablets also contain: colloidal silicon dioxide, ethyl cellulose, hypromellose, isopropyl alcohol, magnesium stearate, microcrystalline cellulose, polyethylene glycol, povidone, titanium dioxide and triethyl citrate. Chemical Structure

Diltiazem hydrochloride, USP is a calcium ion cellular influx inhibitor (slow channel blocker or calcium antagonist). Chemically, diltiazem hydrochloride is 1,5-Benzothiazepin-4(5 H )-one, 3- (acetyloxy)-5-[2-(dimethylamino)ethyl]-2, 3-dihydro-2-(4-methoxyphenyl)-, monohydrochloride, (+)- cis -. The chemical structure is: Diltiazem hydrochloride, USP is a white to off-white crystalline powder with a bitter taste. It is soluble in water, methanol, and chloroform. It has a molecular weight of 450.98. Each diltiazem hydrochloride tablet, USP contains 30 mg, 60 mg, 90 mg, or 120 mg diltiazem hydrochloride, USP. Also contains: colloidal silicon dioxide, hydroxypropyl cellulose, hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, and titanium dioxide. For oral administration. Chemical Structure

Droxidopa capsules contain droxidopa, which is a synthetic amino acid precursor of norepinephrine, for oral administration. Chemically, droxidopa is (–)-threo-3-(3,4- Dihydroxyphenyl)-L-serine. It has the following structural formula: Droxidopa is a white to light brown crystalline powder. It is soluble in dilute hydrochloric acid, and practically insoluble in methanol, glacial acetic acid, ethanol, acetone, ether and chloroform. It has a molecular weight of 213.19 and a molecular formula of C 9 H 11 NO 5 . Droxidopa capsules also contain the following inactive ingredients: mannitol, corn starch, pregelatinized starch, and magnesium stearate. The capsule shell is printed with black ink. The black inks contain shellac, ethanol, isopropyl alcohol, n-butyl alcohol, propylene glycol, ammonia solution, iron oxide black and potassium hydroxide. The capsule shell contains the following inactive ingredients: 100 mg – gelatin, titanium dioxide, FD&C Blue No. 2, black and red iron oxide; 200 mg – gelatin, titanium dioxide, black and yellow iron oxide; 300 mg – gelatin, titanium dioxide, FD&C Blue No. 1and D&C Yellow No. 10. Droxidopa capsules differ in size and color by strength [see Dosage Forms and Strengths ( 3 )] . Droxidopa-01

Enalapril maleate, USP is the maleate salt of enalapril, the ethyl ester of a long-acting angiotensin-converting enzyme inhibitor, enalaprilat. Enalapril maleate is chemically described as (S)-1-[ N -[1-(ethoxycarbonyl)-3-phenylpropyl]-L-alanyl]-L-proline, ( Z )-2-butenedioate salt (1:1). Its molecular formula is C 20 H 28 N 2 O 5 •C 4 H 4 O 4 , and its structural formula is: Enalapril maleate, USP is a white to off-white, crystalline powder with molecular weight of 492.53 g/mol. It is sparingly soluble in water, soluble in ethanol, and freely soluble in methanol. Enalapril is a pro-drug; following oral administration, it is bioactivated by hydrolysis of the ethyl ester to enalaprilat, which is the active angiotensin-converting enzyme inhibitor. Enalapril maleate is supplied as 2.5 mg, 5 mg, 10 mg, and 20 mg tablets for oral administration. In addition to the active ingredient enalapril maleate, each tablet contains the following inactive ingredients: anhydrous lactose and zinc stearate. enalapril-structure

Ethacrynic acid is an unsaturated ketone derivative of an aryloxyacetic acid. It is designated chemically as [2,3-dichloro-4-(2-methylene-1-oxobutyl)phenoxy] acetic acid, and has a molecular weight of 303.14. Ethacrynic acid is a white, or practically white, odor less or practically odorless, crystalline powder, freely soluble in alcohol, chloroform and ether, very slightly soluble in water. Its empirical formula is C 13 H 12 Cl 2 O 4 and its structural formula is: Ethacrynic Acid Tablets USP are supplied as 25 mg tablets for oral use. The tablets contain the following inactive ingredients: lactose monohydrate, pregelatinized starch (corn), colloidal silicon dioxide, talc and calcium stearate. FDA approved dissolution specification differs from the USP dissolution specification. Chemical Structure

Ezetimibe is a dietary cholesterol absorption inhibitor. The chemical name of ezetimibe is 1-(4-fluorophenyl)-3(R)-[3-(4-fluorophenyl)-3(S)-hydroxypropyl]-4(S)- (4-hydroxyphenyl)-2-azetidinone. The empirical formula is C 24 H 21 F 2 NO 3 . Its molecular weight is 409.4 and its structural formula is: Ezetimibe, USP is a white to off-white powder that is freely soluble in ethanol and soluble in acetonitrile. Ezetimibe has a melting point of about 163°C and is stable at ambient temperature. Ezetimibe is available as a tablet for oral use containing 10 mg of ezetimibe, USP and the following inactive ingredients: lactose monohydrate NF, magnesium stearate NF, povidone USP, sodium lauryl sulfate NF and sodium starch glycolate, NF. image of ezetimibe chemical structure

Uses reduces hives and relieves itching due to hives (urticaria). This product will not prevent hives or an allergic skin reaction from occurring. Uses temporarily relieves these symptoms due to hay fever or other upper respiratory allergies: runny nose sneezing itchy, watery eyes itching of the nose or throat

Hydralazine Hydrochloride tablets USP, is an antihypertensive, for oral administration. Its chemical name is 1-hydrazinophthalazine monohydrochloride, and its structural formula is: C 8 H 8 N 4 .HCl M.W. 196.64 Hydralazine Hydrochloride USP is a white to off-white, odorless crystalline powder. It is soluble in water, slightly soluble in alcohol. It melts at about 275°C, with decomposition. Each tablet for oral administration contains 10 mg, 25 mg, 50 mg or 100 mg hydralazine hydrochloride, USP. Tablets also contain anhydrous lactose, FD&C yellow no. 6 aluminum lake, microcrystalline cellulose, sodium starch glycolate, and stearic acid. Chem structure

Irbesartan is an angiotensin II receptor (AT 1 subtype) antagonist. Irbesartan is a non-peptide compound, chemically described as a 2-butyl-3-[ p -( o -1 H -tetrazol-5ylphenyl)benzyl]-1,3-diazaspiro[4.4]non-1-en-4-one. Its empirical 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 Tablets, USP are available for oral administration in unscored tablets containing 75 mg, 150 mg, or 300 mg of irbesartan. Inactive ingredients include: lactose monohydrate, microcrystalline cellulose, pregelatinized starch, croscarmellose sodium, povidone, colloidal silicon dioxide, and magnesium stearate. irbesartan-figure-9

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, USP is a white to light yellow powder. It is sparingly soluble in water and slightly soluble in acetonitrile, soluble in dichloromethane and methanol. Chemical structure 11.1 Lacosamide Tablets Lacosamide tablets, USP for oral administration contain lacosamide and the following inactive ingredients: colloidal silicon dioxide, crospovidone, hydroxypropyl cellulose, magnesium stearate and microcrystalline cellulose. Lacosamide tablets, USP are supplied as debossed tablets and contain the following coating agents: 50 mg tablets: opadry pink 03F140000 contains hypromellose 6cp, titanium dioxide, polyethylene glycol, FD&C Red #40/allura Red AC aluminum lake, FD&C Blue #2/indigo carmine aluminum lake. 100 mg tablets: opadry yellow 03F82606 contains hypromellose 6cp, titanium dioxide, polyethylene glycol, iron oxide yellow, iron oxide red. 150 mg tablets: opadry beige 03F130001 contains hypromellose 6cp, titanium dioxide, polyethylene glycol, FD&C Yellow #6/sunset yellow FCF aluminum lake, FD&C Red #40/Allura Red AC aluminum lake, FD&C Blue #2/indigo carmine aluminum lake. 200 mg tablets: opadry blue 03F105002 contains hypromellose 6cp, titanium dioxide, polyethylene glycol, FD&C Blue #2/indigo carmine aluminum lake.

Lamotrigine USP, an AED of the phenyltriazine class, is chemically unrelated to existing AEDs. Lamotrigine's chemical name is 3,5-diamino-6-(2,3-dichlorophenyl)- as -triazine, its molecular formula is C 9 H 7 N 5 Cl 2 , and its molecular weight is 256.1. Lamotrigine USP is a white to pale cream-colored powder and has a pKa of 5.7. Lamotrigine USP is slightly soluble in anhydrous ethanol, practically insoluble in dilute hydrochloric acid and in water. The structural formula is: Lamotrigine Orally Disintegrating Tablets, USP are supplied for oral administration. The tablets contain 25 mg (white to off-white), 50 mg (white to off-white), 100 mg (white to off white), or 200 mg (white to off-white) of lamotrigine and the following inactive ingredients: amino methacrylate copolymer, aspartame, colloidal silicon dioxide, crospovidone, kollidon SR, magnesium stearate, mannitol, sucralose and artificial cherry flavor containing dextrose, corn starch, and tricalcium phosphate. structure

Levetiracetam is an antiepileptic drug available as 250mg (white), 500 mg (Yellow), 750 mg (Orange) and 1000mg (white) tablets for oral administration. The chemical name of levetiracetam, a single enantiomer, is (-)-(S)-α-ethyl-2-oxo-1-pyrrolidine acetamide, its molecular formula is C 8 H 14 N 2 O 2 and its molecular weight is 170.21. Levetiracetam is chemically unrelated to existing antiepileptic drugs (AEDs). It has the following structural formula: Levetiracetam, USP is a white to off-white crystalline powder with a faint odor and a bitter taste. It is very soluble in water (104.0 g/100 mL). It is freely soluble in chloroform (65.3 g/100 mL) and in methanol (53.6 g/100 mL), soluble in ethanol (16.5 g/100 mL), sparingly soluble in acetonitrile (5.7 g/100 mL) and practically insoluble in n-hexane. (Solubility limits are expressed as g/100 mL solvent.) Levetiracetam tablets, USP contain the labeled amount of levetiracetam, USP. Inactive ingredients: colloidal silicon dioxide, croscarmellose sodium, magnesium stearate, povidone, hypromellose, titanium dioxide. Additionally 250 mg and 1000 mg tablets include polyethylene glycol 400; 500 mg tablets include talc, polyethylene glycol 8000, iron oxide yellow; 750 mg tablets include talc, polyethylene glycol 8000, iron oxide red, FD&C yellow #6/sunset yellow FCF aluminum lake. This product meets the requirements of USP Dissolution Test-5 . structure

Levetiracetam extended-release tablets, USP is an antiepileptic drug available as 500 mg and 750 mg (white) tablets for oral administration. The chemical name of levetiracetam, a single enantiomer, is (-)-(S)-α-ethyl-2-oxo-1- pyrrolidine acetamide, its molecular formula is C 8 H 14 N 2 O 2 and its molecular weight is 170.21. Levetiracetam is chemically unrelated to existing antiepileptic drugs (AEDs). It has the following structural formula: Levetiracetam is a white to off-white crystalline powder with a faint odor and a bitter taste. It is very soluble in water (104.0 g/100 mL). It is freely soluble in chloroform (65.3 g/100 mL) and in methanol (53.6 g/100 mL), soluble in ethanol (16.5 g/100 mL), sparingly soluble in acetonitrile (5.7 g/100 mL) and practically insoluble in n-hexane. (Solubility limits are expressed as g/100 mL solvent.) Levetiracetam extended-release tablets, USP contain the labeled amount of levetiracetam, USP. Inactive ingredients: colloidal silicon dioxide, microcrystalline cellulose, magnesium stearate, hypromellose, povidone, opadry white (03F180003). Opadry white (03F180003) contains hypromellose, titanium dioxide, macrogol and talc. The medication is combined with a drug release controlling polymer that provides a drug release at a controlled rate. The biologically inert components of the tablet may occasionally remain intact during GI transit and will be eliminated in the feces as a soft, hydrated mass. This product meets the requirements of USP Dissolution Test 2. levetiracetamxr-01

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 is the R enantiomer of cetirizine hydrochloride, a racemic compound with antihistaminic properties. The empirical formula of levocetirizine dihydrochloride 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, or almost white powder and is freely soluble in water, practically insoluble in acetone and methylene chloride. Levocetirizine dihydrochloride tablets, USP 5 mg are formulated as immediate release, white, film-coated, oval, scored tablets for oral administration. The tablets are debossed with “S” on the left side of bisect and “G” on the right side of the bisect and other side “1” on the left side and “36” on the right side of the bisect. Inactive ingredients are: microcrystalline cellulose, lactose monohydrate, colloidal silicon dioxide, and magnesium stearate. The film coating contains hypromellose, titanium dioxide, and polyethylene glycol. Chemical Structure

Metaxalone tablets , USP contain 400 mg and 800 mg of metaxalone and the following inactive ingredients: alginic acid, corn starch, ferric oxide red, copovidone, magnesium stearate, povidone, pregelatinized starch, sodium alginate. Metaxalone tablet is a muscle relaxant for oral administration. Chemically, metaxalone is 5-[(3,5- dimethylphenoxy) methyl]-2-oxazolidinone. The empirical formula is C 12 H 15 NO 3 , which corresponds to a molecular weight of 221.25. The structural formula is: Metaxalone, USP is a white to almost white, crystalline powder freely soluble in dichloromethane, soluble in methanol, sparingly soluble in ethanol and ethyl acetate, slightly soluble in toluene and isopropanol, insoluble in water and n-hexane. image

Metformin hydrochloride extended-release tablets, USP contain the biguanide antihyperglycemic agent metformin in the form of monohydrochloride salt. The chemical name of metformin hydrochloride is N,N-dimethylimidodicarbonimidic diamide hydrochloride. The structural formula is as shown: Metformin hydrochloride is a white to off-white crystalline compound with a molecular formula of C 4 H 11 N 5 •HCl and a molecular weight of 165.63. Metformin hydrochloride is freely soluble in water, slightly soluble in alcohol and is practically insoluble in acetone and methylene chloride. The pKa of metformin is 12.4. The pH of a 1% aqueous solution of metformin hydrochloride is 6.68. Metformin hydrochloride extended-release tablets contain 500 mg or 1,000 mg of metformin hydrochloride, USP which is equivalent to 389.93 mg or 779.86 mg metformin, respectively. Each tablet contains ammonio methacrylate copolymer, crospovidone, hypromellose, magnesium stearate, pregelatinized starch (maize), povidone, polyethylene glycol, silicon dioxide, talc, titanium dioxide and triethyl citrate. Metformin hydrochloride extended-release tablets USP meets USP Dissolution Test 12. structural-formula

Metformin hydrochloride extended-release tablets, USP contain the biguanide antihyperglycemic agent, metformin, in the form of monohydrochloride salt. The chemical name of metformin hydrochloride is N, N-dimethylimidodicarbonimidic diamide hydrochloride with a molecular formula of C 4 H 11 N 5 •HCl and a molecular weight of 165.63. Its structural formula is: Metformin hydrochloride is a white to off-white crystalline powder that freely soluble in water, slightly soluble in alcohol and is practically insoluble in acetone and methylene chloride. The pKa of metformin is 12.4. The pH of a 1% aqueous solution of metformin hydrochloride is 6.68. Metformin hydrochloride extended-release tablets contain 500 mg or 1,000 mg of metformin hydrochloride, USP which is equivalent to 389.93 mg or 779.86 mg metformin, respectively. In addition to the active ingredient metformin HCl, each tablet contains ammonio methacrylate copolymer, hypromellose, magnesium stearate, pregelatinized starch (maize), polyethylene glycol, polyvinylpyrrolidone, silicon dioxide, talc, titanium dioxide and triethyl citrate. Metformin hydrochloride extended-release tablets USP meets USP Dissolution Test 12. Formula

Metoclopramide hydrochloride, the active ingredient of metoclopramide tablets, is a dopamine-2 receptor antagonist. Metoclopramide hydrochloride (metoclopramide monohydrochloride monohydrate) is a white crystalline, odorless substance, freely soluble in water. Its chemical name is 4-amino-5-chloro-N-[2-(diethylamino)ethyl]-2-methoxy benzamide monohydrochloride monohydrate. The molecular formula is C 14 H 22 ClN 3 O 2 •HCl•H 2 O. Its molecular weight is 354.28. The structural formula is: Metoclopramide tablets are for oral administration. Metoclopramide tablets are available as 5 mg and 10 mg tablets. Each metoclopramide 5 mg tablet contains 5 mg metoclopramide (equivalent to 5.909 mg of metoclopramide hydrochloride USP). Inactive ingredients consist of microcrystalline cellulose, lactose monohydrate and magnesium stearate. Each metoclopramide 10 mg tablet contains 10 mg metoclopramide (equivalent to 11.818 mg metoclopramide hydrochloride USP). Inactive ingredients consist of microcrystalline cellulose, lactose monohydrate and magnesium stearate. FDA approved dissolution test specifications differ from USP. metoclopramide structure

Nabumetone is a naphthylalkanone designated chemically as 4-(6-methoxy-2- naphthalenyl)-2- butanone. It has the following structure: Nabumetone, USP is a white or almost white crystalline substance with a molecular weight of 228.3. It is nonacidic, freely soluble in acetone, sparingly soluble in alcohol and in methanol, practically insoluble in water. It has an n-octanol:phosphate buffer partition coefficient of 2400 at pH 7.4. Each tablet, for oral administration contains either 500 mg or 750 mg of nabumetone, USP. In addition, each tablet contains the following inactive ingredients: hypromellose, microcrystalline cellulose, sodium lauryl sulfate, sodium starch glycolate, polyethylene glycol and titanium dioxide. structure1

The active ingredients of naproxen and esomeprazole magnesium delayed-release tablets are naproxen which is an NSAID and esomeprazole magnesium which is a Proton Pump Inhibitor (PPI). Naproxen and esomeprazole magnesium delayed-release tablets (naproxen and esomeprazole magnesium) is combination of a nonsteroidal anti-inflammatory drug and a PPI available as an oval, yellow, multi-layer, delayed-release tablet combining an enteric-coated naproxen core and an immediate-release esomeprazole magnesium layer surrounding the core. Each strength contains either 375 mg of naproxen and 20 mg of esomeprazole (equivalent to 22.3 mg esomeprazole magnesium trihydrate) or 500 mg of naproxen and 20 mg of esomeprazole (equivalent to 22.3 mg esomeprazole magnesium trihydrate) for oral administration. The inactive ingredients are colloidal silicon dioxide, croscarmellose sodium, hypromellose, iron oxide yellow, magnesium oxide, magnesium stearate, methacrylic acid and ethyl acrylate copolymer dispersion, talc, plasacryl, polyethylene glycol, polysorbate 80, povidone, titanium dioxide. The imprinting ink contains ammonium hydroxide, iron oxide black, propylene glycol, shellac glaze. The chemical name for naproxen is (S)-6-methoxy-α-methyl-2-naphthaleneacetic acid. Naproxen has the following structure: Naproxen has a molecular weight of 230.26 and a molecular formula of C 14 H 14 O 3 . Naproxen, USP is an odorless, white to off-white crystalline substance. It is lipid soluble, practically insoluble in water at low pH and freely soluble in water at high pH. The octanol/water partition coefficient of naproxen at pH 7.4 is 1.6 to 1.8. The chemical name for esomeprazole, USP is bis(5-methoxy-2-[(S)-[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-1 H -benzimidazole-1-yl) magnesium trihydrate. Esomeprazole, USP is the S-isomer of omeprazole, which is a mixture of the S- and R- isomers. Its molecular formula is (C 17 H 18 N 3 O 3 S)2Mg x 3 H 2 O with molecular weight of 767.2 as a trihydrate and 713.1 on an anhydrous basis. The structural formula is: The magnesium salt is a white to slightly colored crystalline powder. It contains 3 moles of water of solvation and is slightly soluble in water. The stability of esomeprazole magnesium is a function of pH; it rapidly degrades in acidic media, but it has acceptable stability under alkaline conditions. At pH 6.8 (buffer), the half-life of the magnesium salt is about 19 hours at 25°C and about 8 hours at 37°C. structure1 structure2

Naproxen sodium tablets, USP are nonsteroidal anti-inflammatory drugs and available as white capsule-shape tablets, containing 275 mg or 550 mg of naproxen sodium for oral administration. Naproxen sodium is a member of the arylacetic acid group of nonsteroidal anti-inflammatory drugs. The chemical name for naproxen sodium is (S)-6-methoxy-α-methyl-2-naphthaleneacetic acid, sodium salt. Naproxen sodium has a molecular weight of 252.25 and a molecular formula of C 14 H 13 NaO 3 . It has the following structural formula: Naproxen is white to creamy crystalline powder. It is soluble in water and methanol, practically insoluble in chloroform, toluene and acetone, sparingly soluble in alcohol. Each naproxen sodium tablet, USP contains the following inactive ingredients: hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol 400, povidone, talc, and titanium dioxide. Structural Formula

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 -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 and its structural formula is: Olmesartan medoxomil is a white to off-white crystalline powder with a molecular weight of 558.59. It is practically insoluble in water and slightly soluble in methanol. Olmesartan medoxomil tablets, USP 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: croscarmellose sodium, hypromellose, lactose monohydrate, magnesium stearate, polyethylene glycol, pregelatinized starch, silicified microcrystalline cellulose, talc, titanium dioxide, and (5 mg only) yellow iron oxide. FDA approved dissolution specification differs from the USP dissolution specification. Structural formula for olmesartan medoxomil