zydus pharmaceuticals usa inc. - Medication Listings

Levothyroxine Sodium for Injection contains synthetic crystalline levothyroxine (L-thyroxine) sodium salt. Levothyroxine sodium, USP has a molecular formula of C 15 H 10 I 4 NNaO 4 , a molecular weight of 798.85 g/mol (anhydrous), and the following structural formula: Levothyroxine Sodium for Injection is a sterile, preservative-free lyophilized powder consisting of the active ingredient, levothyroxine sodium, USP and the excipients mannitol and sodium hydroxide for pH adjustment in single-dose amber glass vials. Levothyroxine Sodium for Injection is available at three dosage strengths: 100 mcg per vial, 200 mcg per vial and 500 mcg per vial. Image

Atorvastatin calcium (atorvastatin) is an inhibitor of 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase. Atorvastatin calcium 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 molecular 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 that is insoluble in aqueous solutions of pH 4 and below. Atorvastatin calcium, USP is very slightly soluble in distilled water, pH 7.4 phosphate buffer, and acetonitrile; slightly soluble in alcohol; and freely soluble in methanol. Atorvastatin calcium tablets, USP for oral use contain atorvastatin 10 mg, 20 mg, 40 mg, or 80 mg (equivalent to 10.36 mg, 20.72 mg, 41.44 mg, or 82.88 mg atorvastatin calcium anhydrous) and the following inactive ingredients: calcium carbonate, croscarmellose sodium, hydroxypropyl cellulose, hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polysorbate 80, titanium dioxide, and talc. Image

Atorvastatin calcium (atorvastatin) is an inhibitor of 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase. Atorvastatin calcium 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 molecular 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 that is insoluble in aqueous solutions of pH 4 and below. Atorvastatin calcium, USP is very slightly soluble in distilled water, pH 7.4 phosphate buffer, and acetonitrile; slightly soluble in alcohol; and freely soluble in methanol. Atorvastatin calcium tablets, USP for oral use contain atorvastatin 10 mg, 20 mg, 40 mg, or 80 mg (equivalent to 10.36 mg, 20.72 mg, 41.44 mg, or 82.88 mg atorvastatin calcium anhydrous) and the following inactive ingredients: calcium carbonate, croscarmellose sodium, hydroxypropyl cellulose, hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polysorbate 80, titanium dioxide, and talc. The product meets USP dissolution test # 6. Image

Metformin hydrochloride tablets 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, USP is a white crystalline powder 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 tablets, USP contain 500 mg or 850 mg or 1,000 mg of metformin hydrochloride, USP. Each tablet contains the inactive ingredients colloidal silicon dioxide, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, povidone and sodium starch glycolate. The methodology used for dissolution testing is USP Test 1 for metformin hydrochloride tablets, USP. Image

Amlodipine besylate is the besylate salt of amlodipine, a long-acting calcium channel blocker. Amlodipine besylate 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 molecular formula is C 20 H 25 CIN 2 O 5 •C 6 H 6 O 3 S, and its structural formula is: Amlodipine besylate, USP is a white or almost white crystalline powder with a molecular weight of 567.1. It is slightly soluble in water and sparingly soluble in ethanol. Each amlodipine besylate tablet, USP intended for oral administration contains 2.5 mg, 5 mg or 10 mg of amlodipine besylate. In addition, each tablet contains the following inactive ingredients: colloidal silicon dioxide, magnesium stearate, microcrystalline cellulose and sodium starch glycolate. Structured formula for Amlodipine

Metoprolol succinate, is a beta 1 -selective (cardioselective) adrenoceptor blocking agent, for oral administration, available as extended release tablets. Metoprolol succinate has been formulated to provide a controlled and predictable release of metoprolol for once-daily administration. The tablets comprise a multiple unit system containing metoprolol succinate extended-release tablets in a multitude of controlled release pellets. Each pellet acts as a separate drug delivery unit and is designed to deliver metoprolol continuously over the dosage interval. The tablets contain 23.75, 47.5, 95 and 190 mg of metoprolol succinate equivalent to 25, 50, 100 and 200 mg of metoprolol tartrate, respectively. Its chemical name is (±)1- (isopropyl amino)-3-[p-(2-methoxyethyl) phenoxy]-2-propanol succinate (2:1) (salt). Its structural formula is: Metoprolol succinate, USP is a white to off white powder with a molecular weight of 652.8. It is freely soluble in water; soluble in methanol; sparingly soluble in alcohol and slightly soluble in isopropyl alcohol. Each metoprolol succinate extended-release tablet intended for oral administration contains metoprolol succinate equivalent to 25 mg, 50 mg, 100 mg or 200 mg of metoprolol tartrate. In addition, each tablet contains the following inactive ingredients: Colloidal silicon dioxide, croscarmellose sodium, ethyl cellulose, glycerin, hypromellose, magnesium stearate, methyl cellulose, microcrystalline cellulose, polyethylene glycol, povidone and talc. Additionally, each metoprolol succinate extended-release tablets contain opadry II white 03B28796 which contains hypromellose, polyethylene glycol and titanium dioxide. Meets USP Dissolution Test 4. figure

The active ingredient in omeprazole delayed-release capsules is a substituted benzimidazole, 5-methoxy-2-[[(4-methoxy-3, 5-dimethyl-2-pyridinyl) methyl] sulfinyl]-1 H -benzimidazole, a compound that inhibits gastric acid secretion. Its molecular formula is C 17 H 19 N 3 O 3 S, with a molecular weight of 345.42. The structural formula is: Omeprazole, USP is a white to off-white crystalline powder that melts with decomposition at about 155°C. It is a weak base, freely soluble in ethanol and methanol, and slightly soluble in acetone and isopropanol and very slightly soluble in water. The stability of omeprazole is a function of pH; it is rapidly degraded in acid media, but has acceptable stability under alkaline conditions. Each omeprazole delayed-release capsule intended for oral administration contains 10 mg or 20 mg or 40 mg of omeprazole. In addition, each capsule contains the following inactive ingredients: acetone, di-sodium hydrogen phosphate dihydrate, FD&C blue 1, gelatin, hydroxypropyl cellulose, hypromellose, hypromellose phthalate, polyethylene glycol, sodium lauryl sulphate, sugar spheres, talc, titanium dioxide and triethyl citrate. Additionally each 10 mg and 40 mg capsule shell contains FD&C red 3 and FD&C green 3; each 20 mg capsule shell contains iron oxide red and iron oxide yellow. The capsule is printed with black pharmaceutical ink which contains following ingredients: black iron oxide, potassium hydroxide, propylene glycol and shellac. Omeprazole Delayed-Release Capsules USP meet USP Dissolution Test 2. Omeprazole Delayed-Release Capsules

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 molecular formula is C 22 H 22 ClKN 6 O, and its structural formula is: Losartan potassium, USP is white to off-white powder with a molecular weight of 461.01. It is freely soluble in water; soluble in isopropyl alcohol; slightly soluble in acetonitrile. Oxidation of the 5-hydroxymethyl group on the imidazole ring results in the active metabolite of losartan. 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. Each losartan potassium tablet, USP intended for oral administration contains 25 mg or 50 mg or 100 mg of losartan potassium. In addition, each tablet contains the following inactive ingredients: colloidal silica anhydrous, hydroxypropyl cellulose (low substituted), hypromellose, lactose monohydrate, magnesium stearate, maize starch (corn starch), microcrystalline cellulose, polyethylene glycol, sodium starch glycolate, talc and titanium dioxide. Losapotatab1

Albuterol tablets, USP contain albuterol sulfate, USP, the racemic form of albuterol and a relatively selective beta 2 -adrenergic bronchodilator. Albuterol sulfate has the chemical name α 1 -[( tert -Butylamino)methyl]- 4-hydroxy- m -xylene-α,α'-diol sulfate (2:1) (salt) and the following structural formula: The molecular weight of albuterol sulfate is 576.71, and the molecular formula is (C 13 H 21 NO 3 ) 2 •H 2 SO 4 . Albuterol sulfate, USP is a white or practically white powder. It is freely soluble in water, slightly soluble in alcohol, in chloroform and in ether. The World Health Organization recommended name for albuterol base is salbutamol. Each albuterol tablet, USP for oral administration contains 2 mg or 4 mg of albuterol as 2.4 mg or 4.8 mg of albuterol sulfate, USP respectively and following inactive ingredients: colloidal silicon dioxide, lactose monohydrate, magnesium stearate, microcrystalline cellulose, povidone, pregelatinized starch (botanical source: maize) and sodium starch glycolate. FDA approved dissolution specification differs from the USP dissolution specification. Albuterol Tablet

Gabapentin tablet contains 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, USP is a white to off-white, crystalline powder with a pKa1 of 3.7 and a pKa2 of 10.7. It is freely soluble in water and in alkaline and acidic solutions. The log of the partition coefficient (n-octanol/ 0.05M phosphate buffer) at pH 7.4 is -1.25. Each gabapentin tablet intended for oral administration contains 300 mg, 450 mg, 600 mg, 750 mg or 900 mg of gabapentin. In addition, each tablet contains the following inactive ingredients: copovidone, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polyethylene oxide, povidone, talc and titanium dioxide. Image

The active ingredient in gabapentin tablets, USP is gabapentin USP 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 powder with a pK a1 of 3.7 and a pK a2 of 10.7. It is freely soluble in water, 0.1 N hydrochloric acid, 0.1 N sodium hydroxide and glacial acetic acid; slightly soluble in methanol, very slightly soluble in ethanol, 2-propanol; insoluble in toluene. The log of the partition coefficient (n-octanol/0.05M phosphate buffer) at pH 7.4 is –1.25. Each gabapentin tablet, USP intended for oral administration contains 600 mg and 800 mg of gabapentin. In addition each tablet contains following inactive ingredients: copovidone, low substituted hydroxypropyl cellulose, magnesium stearate, mannitol, poloxamer, povidone and talc. Gabapentin tablets

Sertraline hydrochloride capsules contain sertraline hydrochloride, a selective serotonin reuptake inhibitor (SSRI). Sertraline hydrochloride, USP has a molecular weight of 342.690 g/mol and has the following chemical name: (1S,4S)-4-(3,4-Dichlorophenyl)-N-methyl-1,2,3,4-tetrahydro-1-naphthalen amine hydrochloride. The molecular formula C 17 H 17 Cl 2 N • HCl is represented by the following structural formula: Sertraline hydrochloride, USP is a white or off white crystalline powder that is slightly soluble in water, acetone and isopropyl alcohol. Sertraline hydrochloride capsules are for oral administration and contain 168 mg and 224 mg sertraline hydrochloride, USP equivalent to 150 mg and 200 mg sertraline, and the following inactive ingredients: croscarmellose sodium, colloidal silicon dioxide, gelatin, hydroxypropyl cellulose, magnesium stearate, microcrystalline cellulose and titanium dioxide. The 150 mg capsules contain D&C Yellow 10 and FD&C red 40 as color additives. The 200 mg capsules contain D&C Yellow 10 and FD&C blue 1 as a color additive. Each capsule is imprinted with black ink which contains black iron oxide, potassium hydroxide, propylene glycol and shellac. Image

Trazodone hydrochloride is a selective serotonin reuptake inhibitor and 5HT2 receptor antagonist. Trazodone hydrochloride, USP is a triazolopyridine derivative designated as 2-[3-[4-(3-chlorophenyl)-1-piperazinyl]propyl]- 1,2,4-triazolo[4, 3-a]pyridin-3(2H)-one hydrochloride. It is a white to off-white, crystalline powder which is sparingly soluble in chloroform and in water. The structural formula is represented as follows: Molecular Formula: C 19 H 22 C l N 5 O•HCl Molecular Weight: 408.32 Each trazodone hydrochloride tablet, USP for oral administration contains 50 mg, 100 mg, 150 mg or 300 mg of trazodone hydrochloride, USP. In addition, each tablet contains the following inactive ingredients: colloidal silicon dioxide, magnesium stearate, microcrystalline cellulose, pregelatinized starch, sodium lauryl sulfate, and sodium starch glycolate. The Product meets USP Dissolution Test #2. Trazodone Hydrochloride Tablets USP

Carvedilol is a nonselective β-adrenergic blocking agent with α 1 -blocking activity. It is (±)-1-(Carbazol-4-yloxy)-3-[[2-(o-methoxyphenoxy)ethyl]amino]-2-propanol. Carvedilol is a racemic mixture with the following structure: Carvedilol, USP is a white to almost white crystalline powder with a molecular weight of 406.5 and a molecular formula of C 24 H 26 N 2 O 4 . It is freely soluble in dimethylsulfoxide; soluble in methylene chloride and methanol; sparingly soluble in 95% ethanol and isopropanol; slightly soluble in ethyl ether; and practically insoluble in water, gastric fluid (simulated, TS, pH 1.1), and intestinal fluid (simulated, TS without pancreatin, pH 7.5). Each carvedilol tablet, USP intended for oral administration contains 3.125 mg or 6.25 mg or 12.5 mg or 25 mg of carvedilol. In addition, each tablet contains the following inactive ingredients: colloidal silicon dioxide, crospovidone, hypromellose, lactose monohydrate, magnesium stearate, polyethylene glycol, povidone, talc and titanium dioxide. The product meets USP Dissolution Test 3. structured formula for carvedilol

The active ingredient in esomeprazole magnesium for delayed-release oral suspension is bis(5-methoxy-2-[(S)-[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-1 H -benzimidazole-1-yl) magnesium dihydrate. Esomeprazole is the S-isomer of omeprazole, which is a mixture of the S- and R- isomers. (Initial U.S. approval of esomeprazole magnesium: 2001). Its molecular formula is (C 17 H 18 N 3 O 3 S) 2 Mg x 2 H 2 O with molecular weight of 749.15 as a dihydrate and 713.15 on an anhydrous basis. The structural formula is: The magnesium salt is a white to creamish colored hygroscopic powder. It contains 2 moles of water of solvation and is slightly soluble in water and methanol, practically in soluble in heptane and soluble in N, N-dimethyl formamide. 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. Each packet of esomeprazole magnesium for delayed-release oral suspension contains 20 mg, or 40 mg of esomeprazole (present as 21.8 mg and 43.5 mg esomeprazole magnesium dihydrate USP, respectively), in the form of the enteric-coated pellets and inactive granules. The enteric-coated pellets are composed of following inactive ingredients: hydroxypropyl cellulose, magnesium stearate, mannitol, methacrylic acid copolymer dispersion, mono-and di-glycerides, polysorbate 80, povidone, talc, triethyl citrate and sugar spheres (source: sucrose and maize starch). The inactive granules are composed of the following ingredients: anhydrous citric acid, crospovidone, dextrose, ferric oxide red, strawberry flavor and xanthan gum. The esomeprazole pellets and inactive granules are constituted with water to form a suspension and are given by oral, nasogastric, or gastric administration. Esomeprazole Magnesium For Delayed-Release Oral Suspension

The active ingredient in esomeprazole magnesium delayed-release capsules, USP for oral administration is bis (5-methoxy-2-[(S)-[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-1 H -benzimidazole-1-yl) magnesium dihydrate, a PPI. Esomeprazole is the S-isomer of omeprazole, which is a mixture of the S- and R- isomers. (Initial U.S. approval of esomeprazole magnesium: 2001). Its molecular formula is (C 17 H 18 N 3 O 3 S) 2 Mg x 2 H 2 O with molecular weight of 749.15 as a dihydrate and 713.15 on an anhydrous basis. The structural formula is: Figure 1 The magnesium salt is a white to creamish colored hygroscopic powder. It contains 2 moles of water of solvation and is slightly soluble in water and methanol, practically in soluble in heptane and soluble in N, N-dimethyl formamide. 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. Each capsule of esomeprazole magnesium delayed-release capsule, USP contains 20 mg, or 40 mg of esomeprazole (present as 21.8 mg and 43.5 mg esomeprazole magnesium dihydrate, respectively), in the form of the enteric-coated pellets. The enteric-coated pellets are composed of following inactive ingredients: FD&C blue 1, hydroxypropyl cellulose, gelatin, magnesium oxide, magnesium stearate, mannitol, methacrylic acid copolymer dispersion, mono- and di-glycerides, povidone, polysorbate 80, sodium lauryl sulfate, starch (source: maize), sucrose, talc, titanium dioxide and triethyl citrate. Additionally, each 20 mg capsule shell contains: FD&C red 3 and each 40 mg capsule shell contains: D&C red 28. The capsule shell is printed with black pharmaceutical ink which contains following ingredients: black iron oxide, potassium hydroxide, propylene glycol and shellac. esomeprazole

Triamterene and hydrochlorothiazide combines triamterene a potassium-conserving diuretic, with the natriuretic agent, hydrochlorothiazide. Each Triamterene and Hydrochlorothiazide Tablet USP, 37.5 mg/25 mg contains: Triamterene, USP ..............................................................................37.5 mg Hydrochlorothiazide, USP ................................................................25 mg Each Triamterene and Hydrochlorothiazide Tablet USP, 75 mg/50 mg contains: Triamterene, USP .............................................................................75 mg Hydrochlorothiazide, USP ................................................................50 mg Each triamterene and hydrochlorothiazide tablet, USP intended for oral administration contains 37.5 mg triamterene USP with 25 mg hydrochlorothiazide USP and 75 mg triamterene USP with 50 mg hydrochlorothiazide USP. In addition, each tablet contains the following inactive ingredients: colloidal silicon dioxide, croscarmellose sodium, D&C Yellow No. 10 Aluminum Lake, hypromellose, magnesium stearate and microcrystalline cellulose. Additionally, the 37.5 mg/25 mg tablets contain FD&C Blue No. 1 Aluminum Lake. Triamterene is 2,4,7-triamino-6-phenylpteridine. Triamterene, USP is soluble in formic acid. It is sparingly soluble in methoxyethanol. It is very slightly soluble in acetic acid, alcohol and dilute mineral acids. It is practically insoluble in water, benzene, ether, chloroform and dilute alkali hydroxides. Its molecular weight is 253.26. Its structural formula is: Hydrochlorothiazide is 6-chloro-3,4-dihydro-2 H -1,2,4, benzothiadiazine-7-sulfonamide 1,1-dioxide. Hydrochlorothiazide, USP is very slightly soluble in water. It is freely soluble in sodium hydroxide solution, n-butylamine and dimethyl formamide. It is sparingly soluble in methanol. It is insoluble in ether, chloroform and dilute mineral acids. Its molecular weight is 297.7. Its structural formula is: figure figure

Each capsule of triamterene and hydrochlorothiazide for oral use, with opaque yellow cap and opaque white body, contains triamterene 37.5 mg and hydrochlorothiazide 25 mg, and is imprinted with 855. Hydrochlorothiazide is a diuretic/antihypertensive agent and triamterene is an antikaliuretic agent. Hydrochlorothiazide, USP is very slightly soluble in water. It is freely soluble in sodium hydroxide solution, n-butylamine and dimethyl formamide. It is sparingly soluble in methanol. It is insoluble in ether, chloroform and dilute mineral acids. Hydrochlorothiazide, USP is 6-chloro-3,4-dihydro-2 H -1, 2, 4-benzothiadiazine-7-sulfonamide 1,1-dioxide, and its structural formula is: Triamterene, USP is soluble in formic acid. It is sparingly soluble in methoxyethanol. It is very slightly soluble in acetic acid, alcohol and dilute mineral acids. It is practically insoluble in water, benzene, ether, chloroform and dilute alkali hydroxides. Triamterene, USP is 2, 4, 7-triamino-6-phenylpteridine and its structural formula is: Each triamterene and hydrochlorothiazide capsule, USP intended for oral administration contains 37.5 mg triamterene USP with 25 mg hydrochlorothiazide USP. In addition, each capsule contains the following inactive ingredients: citric acid monohydrate, colloidal silicon dioxide, croscarmellose sodium, gelatin, glycine, hypromellose, iron oxide yellow, magnesium stearate, microcrystalline cellulose, sodium lauryl sulfate and titanium dioxide. Each capsule is printed with black pharmaceutical ink which contains ferric oxide black, potassium hydroxide and shellac. Capsules of triamterene and hydrochlorothiazide meet Drug Release Test 3 as published in the current USP monograph for Triamterene and Hydrochlorothiazide Capsules. image image

Azithromycin for oral suspension, USP contain the active ingredient azithromycin, 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 dihydrate, USP has the following structural formula: Azithromycin dihydrate, USP, 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. It is freely soluble in anhydrous ethanol and in methylene chloride and practically insoluble in water. Azithromycin for oral suspension, USP is supplied in bottles containing azithromycin dihydrate powder equivalent to 300 mg, 600 mg, 900 mg, or 1200 mg azithromycin per bottle and the following inactive ingredients: sucrose; trisodium phosphate anhydrous, hydroxypropyl cellulose; xanthan gum; FD&C Red #40; cherry flavor, ripe banana flavor. After constitution, each 5 mL of suspension contains 100 mg or 200 mg of azithromycin. Azithromycin dihydrate

Meloxicam is a nonsteroidal anti-inflammatory drug (NSAID). Each yellow meloxicam tablet contains 7.5 mg or 15 mg meloxicam for oral administration. Meloxicam is chemically designated as 4-hydroxy-2-methyl- N -(5-methyl-2-thiazolyl)-2 H -1,2-benzothiazine-3-carboxamide-1,1-dioxide. The molecular weight is 351.4. Its empirical formula is C 14 H 13 N 3 O 4 S 2 and it has the following structural formula. Meloxicam, USP is a pale yellow powder, practically insoluble in water, slightly soluble in acetone, soluble in dimethylformamide, very slightly soluble in ethanol (96 %) and in methanol. Meloxicam has an apparent partition coefficient (log P) app = 0.1 in n -octanol/buffer pH 7.4. Meloxicam has pKa values of 1.1 and 4.2. Each meloxicam tablet, USP intended for oral administration contains 7.5 mg or 15 mg of meloxicam. In addition, each tablet contains the following inactive ingredients: colloidal silicon dioxide, crospovidone, lactose monohydrate, magnesium stearate, microcrystalline cellulose, povidone and sodium citrate dihydrate. structured product formula for meloxicam

Oxybutynin chloride extended-release tablets are an antispasmodic, muscarinic antagonist. Each oxybutynin chloride extended-release tablets contains 5 mg, 10 mg, or 15 mg of oxybutynin chloride USP, formulated as a once-a-day controlled-release tablet for oral administration. Oxybutynin chloride is administered as a racemate of R-and S-enantiomers. Chemically, oxybutynin chloride is d,l (racemic) 4-diethylamino-2-butynyl phenylcyclohexylglycolate hydrochloride. The empirical formula of oxybutynin chloride is C 22 H 31 NO 3 •HCl. Its structural formula is: Oxybutynin chloride, USP is a white crystalline, practically odorless powder with a molecular weight of 393.95. It is freely soluble in water and in alcohol, very soluble in methanol and in chloroform, soluble in acetone, slightly soluble in ether and very slightly soluble in hexane. Oxybutynin chloride extended-release tablet, USP also contains the following inactive ingredients: alginic acid, hydrogenated castor oil, hypromellose, lactose monohydrate, magnesium stearate, methacrylic acid copolymer dispersion, microcrystalline cellulose, povidone, talc and triethyl citrate. The product complies the USP Dissolution Test 8 System Components and Performance Oxybutynin chloride extended-release tablet uses an enteric coated hydrophilic hydrogel matrix to deliver oxybutynin chloride at controlled rate over approximately 24 hours by diffusion mechanism. The system comprises of a core, which contains the drug, rate controlling hydrogel and other excipients. The core is surrounded by a partially or complete pH dependent membrane. Hence, when the drug reaches the acidic medium, in stomach minimal drug release will occur and when it reaches an environment of pH 5.5 and above, the outer membrane will be dissolved exposing the inner core. This inner core will partially hydrate to form a gel layer and the drug release will occur via diffusion mechanism from a gel layer and subsequently through gel erosion. Oxybutynin chloride extended-release tablet

Paroxetine tablets, USP contains paroxetine hydrochloride, an SSRI. It is the hydrochloride salt of a phenylpiperidine compound identified chemically as (-)- trans -4 R -(4'-fluorophenyl)-3 S -[(3',4'- methylenedioxyphenoxy) methyl] piperidine hydrochloride hemihydrate and has the molecular formula of C 19 H 20 FNO 3 •HCl•1/2H 2 O. The molecular weight is 374.8 (329.4 as free base). The structural formula of paroxetine hydrochloride is: Paroxetine hydrochloride, USP is an odorless, white to off-white crystalline powder, having a melting point range of 120°C to 138°C. It is freely soluble in methanol, soluble in ethanol, sparingly soluble in dichloromethane and slightly soluble in water. Paroxetine tablets are for oral administration. Each film-coated tablet contains 10 mg, 20 mg, 30 mg, or 40 mg of paroxetine equivalent to 11.1 mg, 22.2 mg, 33.3 mg or 44.4 mg of paroxetine hydrochloride, respectively. In addition, each tablet contains the following inactive ingredients: dibasic calcium phosphate anhydrous, hypromellose 6 cP, lactose anhydrous, magnesium stearate, polyethylene glycol 6000, povidone, sodium starch glycolate, talc, and titanium dioxide. Image

Bupropion hydrochloride extended-release tablets, USP (XL) is an antidepressant of the aminoketone class, is chemically unrelated to tricyclic, tetracyclic, selective serotonin reuptake inhibitor, or other known antidepressant agents. Its structure closely resembles that of diethylpropion; it is related to phenylethylamines. It is designated as (±)-1-(3-chorophenyl)-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 powder is white, crystalline, and highly soluble in water, in 0.1 N hydrochloric acid, and in alcohol. It has a bitter taste and produces the sensation of local anesthesia on the oral mucosa. The structural formula is: Each bupropion hydrochloride extended-release tablets, USP (XL) intended for oral administration contains 150 mg or 300 mg of bupropion hydrochloride. In addition, each tablet contains the following inactive ingredients: ethyl cellulose, hypromellose, magnesium stearate, methacrylic acid copolymer dispersion, polyethylene glycol, povidone, silicon dioxide, triethyl citrate. The tablet is printed with black pharmaceutical ink which contains ammonium hydroxide, butyl alcohol, iron oxide black, isopropyl alcohol, propylene glycol and shellac. The insoluble shell of the extended-release tablet may remain intact during gastrointestinal transit and is eliminated in the feces. The Product meets USP Dissolution Test 26. Bupropion hydrochloride extended-release tablets, USP (XL)

Acamprosate calcium, USP is supplied in an enteric-coated tablet for oral administration. Acamprosate calcium, USP is a synthetic compound with a chemical structure similar to that of the endogenous amino acid homotaurine, which is a structural analogue of the amino acid neurotransmitter γ-aminobutyric acid and the amino acid neuromodulator taurine. Its chemical name is calcium acetylaminopropane sulfonate. Its chemical formula is C 10 H 20 N 2 O 8 S 2 Ca and molecular weight is 400.5. Its structural formula is: Acamprosate calcium, USP is a white or almost white powder. It is freely soluble in water, practically insoluble in alcohol and in methylene chloride. Each acamprosate calcium delayed-release tablet intended for oral administration contains 333 mg of acamprosate calcium, USP equivalent to 300 mg of acamprosate. In addition, each tablet contains the following inactive ingredients: colloidal anhydrous silica, methacrylic acid copolymer type c, magnesium stearate, microcrystalline cellulose, polyethylene glycol, povidone, sodium bicarbonate, sodium lauryl sulfate, sodium starch glycolate and talc. Sulfites were used in the synthesis of the drug substance and traces of residual sulfites may be present in the drug product. figure

Acetazolamide, an inhibitor of the enzyme carbonic anhydrase, is a white to faintly yellowish white crystalline, odorless powder, weakly acidic, 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: Molecular Weight: 222.25 Molecular Formula: C 4 H 6 N 4 O 3 S 2 Acetazolamide is available as oral tablets containing 125 mg and 250 mg of acetazolamide, respectively, and the following inactive ingredients: corn starch, lactose monohydrate, magnesium stearate, povidone and sodium starch glycolate. Image

Acetazolamide Extended-release Capsules USP are an inhibitor of the enzyme carbonic anhydrase. Acetazolamide, USP is a white to faintly yellowish white, crystalline odorless powder, sparingly soluble in practically boiling water, slightly soluble in alcohol, very slightly soluble in water. 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 N 4 O 3 S 2 Each acetazolamide extended-release capsule, USP intended for oral administration contains 500 mg of acetazolamide. In addition, each capsule contains the following inactive ingredients: gelatin, iron oxide yellow, microcrystalline cellulose, sodium lauryl sulfate, talc and titanium dioxide. Each capsule is printed with black pharmaceutical ink which contains black iron oxide, butyl alcohol, dehydrated alcohol, isopropyl alcohol, potassium hydroxide, propylene glycol, shellac and strong ammonia solution. Meets USP Dissolution Test 3. figure

Acyclovir is a synthetic nucleoside analogue active against herpesviruses. Acyclovir tablets are formulations for oral administration. Acyclovir is a white or almost white, crystalline powder with the molecular formula C 8 H 11 N 5 O 3 and a molecular weight of 225.20. It is soluble in diluted hydrochloric acid; slightly soluble in water and insoluble in alcohol. The pka’s of acyclovir are 2.27 and 9.25. The chemical name of acyclovir is 2-amino-1,9-dihydro-9-[(2-hydroxyethoxy)methyl]- 6H- purin-6-one; it has the following structural formula: Each acyclovir tablet intended for oral administration contains 400 mg and 800 mg of acyclovir. In addition, each tablet contains the following inactive ingredients: colloidal silicon dioxide, magnesium stearate, microcrystalline cellulose, pregelatinized starch and sodium starch glycolate. structure

Acyclovir Sodium Injection is a synthetic nucleoside analogue, active against herpes viruses. It is a sterile, aqueous solution for intravenous infusion, containing 50 mg acyclovir per mL in Water for Injection, USP. The concentration is equivalent to 54.9 mg of acyclovir sodium per mL in Water for Injection, USP. The sodium content is approximately 5.1 mg/mL. The pH range of the solution is 10.85 to 11.50. Acyclovir Sodium Injection contains Sodium Hydroxide, NF as inactive ingredient. Further dilution of Acyclovir Sodium Injection in an appropriate intravenous solution must be performed before infusion (see DOSAGE AND ADMINISTRATION, Administration ). The chemical name of acyclovir sodium is 9-[(2-Hydroxyethoxy)methyl] guanine, and has the following structural formula: Acyclovir, USP is a white to off-white, crystalline powder. Acyclovir sodium is the sodium salt of acyclovir, which is formed in situ , with the molecular formula C 8 H 10 N 5 NaO 3 and a molecular weight of 247.19. The maximum solubility in water at 25°C exceeds 100 mg/mL. At physiologic pH, acyclovir sodium exists as the unionized form with a molecular weight of 225 and a maximum solubility in water at 37°C of 2.5 mg/mL. The pka's of acyclovir are 2.27 and 9.25. figure01

Allopurinol is a xanthine oxidase inhibitor. It has the following structural formula: Allopurinol is known chemically as 1,5-dihydro-4H-pyrazolo [3,4-d] pyrimidin-4-oneand it has a molecular weight of 136.11 g/mol. Its solubility in water at 37°C is 80.0 mg/dL and is greater in an alkaline solution. It is a xanthine oxidase inhibitor which is administered orally. Each tablet for oral administration contains either 100 mg, 200 mg or 300 mg of allopurinol, USP and the following inactive ingredients: croscarmellose sodium, colloidal silicon dioxide, lactose monohydrate, magnesium stearate, pregelatinized starch, povidone and FD& C Yellow No. 6 aluminum Lake (only for 300 mg). Image

Amantadine hydrochloride is designated chemically as 1-adamantanamine hydrochloride. Its molecular weight is 187.7 with a molecular formula C 10 H 17 N.HCl. It has the following structural formula: Amantadine hydrochloride, USP is a white or almost white, crystalline powder, freely soluble in water, ethanol and methanol; soluble in chloroform; sparingly soluble in methylene chloride; practically insoluble in ether. Amantadine hydrochloride has pharmacological actions as both an anti-Parkinson and an antiviral drug. Each amantadine hydrochloride capsule, USP intended for oral administration contains 100 mg of amantadine hydrochloride, USP. In addition, each capsule contains the following inactive ingredients: crosscarmellose sodium, ethyl cellulose, FD&C blue #1, FD&C red #40, gelatin, magnesium stearate, microcrystalline cellulose, pregelatinized starch, sodium lauryl sulfate and titanium dioxide. Each capsule is printed with white pharmaceutical ink which contains potassium hydroxide, shellac and titanium dioxide. Meets USP Dissolution Test 2 figure

Ambrisentan is an endothelin receptor antagonist. The chemical name of ambrisentan is (+)-(2 S )-2-[(4, 6-dimethylpyrimidin-2-yl)oxy]-3-methoxy-3,3-diphenylpropanoic acid. It has a molecular formula of C 22 H 22 N 2 O 4 and a molecular weight of 378.42. It contains a single chiral center determined to be the ( S ) configuration and has the following structural formula: Figure 1 Ambrisentan Structural Formula Ambrisentan is a white to light yellow crystalline powder. It is a carboxylic acid with a pKa of 4.0. It is freely soluble in tetrahydrofuran, sparingly soluble in ethyl acetate, slightly soluble in ethanol, practically insoluble in n-hexane, water and in aqueous solutions at low pH. Solubility increases in aqueous solutions at higher pH. In the solid state ambrisentan is very stable, is not hygroscopic, and is not light sensitive. Ambrisentan tablets are available as 5 mg and 10 mg film-coated tablets for once daily oral administration and contain the following inactive ingredients: croscarmellose sodium, lactose monohydrate, lecithin, magnesium stearate, microcrystalline cellulose, partially hydrolyzed polyvinyl alcohol, polyethylene glycol, povidone, talc and titanium dioxide. Additionally, 5 mg tablet contains: FD&C red#40 aluminum lake. image

Amiodarone hydrochloride is an antiarrhythmic drug. Amiodarone is a benzofuran derivative: 2-butyl-3-benzofuranyl 4-[2-(diethylamino)-ethoxy]-3,5-diiodophenyl ketone hydrochloride. The structural formula is as follows: Amiodarone hydrochloride, USP is a white or almost white, fine crystalline powder. It is very slightly soluble in water, freely soluble in methylene chloride, soluble in methanol; sparingly soluble in alcohol. It contains 37.3% iodine by weight. Each amiodarone hydrochloride tablets, USP intended for oral administration contains 100 mg, 200 mg and 400 mg of amiodarone hydrochloride. In addition each tablet contains the following inactive ingredients: colloidal silicon dioxide, corn starch, lactose monohydrate, magnesium stearate, povidone and sodium starch glycolate. Additionally, each 400 mg tablet contains D&C yellow #10 Aluminum Lake, iron oxide red and iron oxide yellow. image

Amitriptyline hydrochloride USP, a dibenzocycloheptadiene derivative, is a white, or practically white, odorless or practically odorless, crystalline powder or small crystals and freely soluble in water, alcohol, chloroform and methanol and insoluble in ether. It is designated chemically as 10,11-Dihydro-N,N-dimethyl-5 H -dibenzo[a,d] cycloheptene-Δ 5 , γ-propylamine hydrochloride. It has the following structural formula: Each amitriptyline hydrochloride tablet, USP for oral administration contains 10 mg, 25 mg, 50 mg, 75 mg, 100 mg, or 150 mg amitriptyline hydrochloride, USP. Inactive ingredients are: croscarmellose sodium, colloidal silicon dioxide, hydroxypropyl methylcellulose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, pregelatinized starch (corn), talc, and titanium dioxide. Additionally, 25 mg tablets contain: D&C Yellow #10 Aluminum Lake and FD&C Blue #1 Aluminum Lake; 50 mg tablets contain: D&C Yellow #10 Aluminum Lake, iron oxide red and iron oxide yellow; 75 mg tablets contain: FD&C Blue #2 Aluminum Lake and iron oxide yellow; 100 mg tablets contain: D&C Red #27 Aluminum Lake and D&C Yellow #10 Aluminum Lake; 150 mg tablets contain: iron oxide red and iron oxide yellow. structure

Anastrozole tablets, USP for oral administration contain 1 mg of anastrozole, a non-steroidal aromatase inhibitor. It is chemically described as 1,3-Benzenediacetonitrile, a, a, a', a'-tetramethyl-5-(1H-1,2,4-triazol-1-ylmethyl). Its molecular formula is C 17 H 19 N 5 and its structural formula is: Anastrozole, USP is an off-white powder with a molecular weight of 293.4. Anastrozole has moderate aqueous solubility (0.5 mg/mL at 25°C); solubility is independent of pH in the physiological range. Anastrozole is freely soluble in methanol, acetone, ethanol, and tetrahydrofuran, and very soluble in acetonitrile. Each tablet contains as inactive ingredients: lactose, magnesium stearate, hydroxypropylmethylcellulose, polyethylene glycol, povidone, sodium starch glycolate, and titanium dioxide. Structured formula for Anastrozole Tablets

Arsenic trioxide injection is a sterile injectable solution of arsenic trioxide. The molecular formula of arsenic trioxide in the solid state is As 2 O 3 , with a molecular weight of 197.8 and the following structural formula: Arsenic trioxide injection is available in 6 mL, single-dose vials containing 12 mg of arsenic trioxide. Arsenic trioxide injection is formulated as a sterile, nonpyrogenic, clear solution of arsenic trioxide in water for injection using sodium hydroxide and dilute hydrochloric acid and/or sodium hydroxide to adjust to pH 8. Arsenic trioxide injection is preservative-free. Arsenic trioxide, the active ingredient, is present at a concentration of 2 mg/ mL. Inactive ingredients and their respective approximate concentrations are sodium hydroxide (1.2 mg/mL) for solubilization, and sodium hydroxide and hydrochloric acid for pH adjustment to pH 7.7 to 8.2. Image

Arsenic trioxide injection is a sterile injectable solution of arsenic trioxide. The molecular formula of arsenic trioxide in the solid state is As 2 O 3 , with a molecular weight of 197.8 and the following structural formula: Arsenic trioxide injection is available in 6 mL, single-dose vials containing 12 mg of arsenic trioxide. Arsenic trioxide injection is formulated as a sterile, nonpyrogenic, clear solution of arsenic trioxide in water for injection using sodium hydroxide and dilute hydrochloric acid and/or sodium hydroxide to adjust to pH 8. Arsenic trioxide injection is preservative-free. Arsenic trioxide, the active ingredient, is present at a concentration of 2 mg/ mL. Inactive ingredients and their respective approximate concentrations are sodium hydroxide (1.2 mg/mL) for solubilization, and sodium hydroxide and hydrochloric acid for pH adjustment to pH 7.7 to 8.2. Image

Arsenic trioxide injection is a sterile injectable solution of arsenic trioxide. The molecular formula of arsenic trioxide in the solid state is As 2 O 3 , with a molecular weight of 197.8 and the following structural formula: Arsenic trioxide injection is available in 10 mL, single-dose vials containing 10 mg of arsenic trioxide. Arsenic trioxide injection is formulated as a sterile, nonpyrogenic, clear solution of arsenic trioxide in water for injection using sodium hydroxide and dilute hydrochloric acid to adjust to pH 8. Arsenic trioxide injection is preservative-free. Arsenic trioxide, the active ingredient, is present at a concentration of 1 mg/ mL. Inactive ingredients and their respective approximate concentrations are sodium hydroxide (1.2 mg/mL) for solubilization, and hydrochloric acid for pH adjustment to pH 7.5 to 8.5. Image

Arsenic trioxide injection is a sterile injectable solution of arsenic trioxide. The molecular formula of arsenic trioxide in the solid state is As 2 O 3 , with a molecular weight of 197.8 and the following structural formula: Arsenic trioxide injection is available in 10 mL, single-dose vials containing 10 mg of arsenic trioxide. Arsenic trioxide injection is formulated as a sterile, nonpyrogenic, clear solution of arsenic trioxide in water for injection using sodium hydroxide and dilute hydrochloric acid to adjust to pH 8. Arsenic trioxide injection is preservative-free. Arsenic trioxide, the active ingredient, is present at a concentration of 1 mg/ mL. Inactive ingredients and their respective approximate concentrations are sodium hydroxide (1.2 mg/mL) for solubilization and hydrochloric acid for pH adjustment to pH 7.5 to 8.5. Image

Atenolol, a synthetic, beta 1 -selective (cardioselective) adrenoreceptor blocking agent, may be chemically described as benzeneacetamide, 4 -[2'-hydroxy-3'-[(1- methylethyl) amino] propoxy]-. The molecular and structural formulas are: Atenolol, USP has a molecular weight of 266. It is a white or almost white powder, sparingly soluble in water; soluble in absolute alcohol and practically insoluble in ether. Atenolol tablets, for oral administration, are available as 25 mg, 50 mg and 100 mg tablets. Inactive Ingredients: Citric acid (anhydrous), colloidal silicon dioxide, croscarmellose sodium, magnesium stearate, microcrystalline cellulose, povidone. Atenolol Tablets, USP

Atenolol and chlorthalidone tablets are for the treatment of hypertension. It combines the antihypertensive activity of two agents: a beta 1 -selective (cardioselective) hydrophilic blocking agent (atenolol) and a monosulfonamyl diuretic (chlorthalidone). Atenolol is Benzeneacetamide, 4-[2'-hydroxy-3'-[(1-methylethyl) amino] propoxy]. Atenolol, USP is a white or almost white powder and is sparingly soluble in water; soluble in absolute alcohol and practically insoluble in ether. Chlorthalidone is 2-Chloro-5-(1-hydroxy-3-oxo-1-isoindolinyl) benzene sulfonamide: Chlorthalidone, USP is white to yellowish crystalline powder. Each atenolol and chlorthalidone tablet, USP intended for oral administration contains atenolol 50 mg or 100 mg and chlorthalidone 25 mg. In addition, each uncoated tablet contains the following inactive ingredients: citric acid, colloidal silicon dioxide, croscarmellose sodium, magnesium stearate, pregelatinized starch and silicified microcrystalline cellulose. Atenolol Chlorthalidon Tablets, USP Atenolol Chlorthalidon Tablets, USP

Atomoxetine is a selective norepinephrine reuptake inhibitor. Atomoxetine hydrochloride is the R (-) isomer as determined by x-ray diffraction. The chemical designation is (-)- N -Methyl-3-phenyl-3-( o- tolyloxy)-propylamine hydrochloride. The molecular formula is C 17 H 21 NO•HCl, which corresponds to a molecular weight of 291.82. The chemical structure is: Atomoxetine hydrochloride is a white to practically white solid, which has a solubility of 27.8 mg/mL in water. Each atomoxetine capsule intended for oral administration contains atomoxetine hydrochloride, USP equivalent to atomoxetine 10 mg or 18 mg or 25 mg or 40 mg or 60 mg or 80 mg or 100 mg. In addition, each capsule contains the following inactive ingredients: colloidal silicon dioxide, gelatin, pregelatinized starch, sodium lauryl sulfate and titanium dioxide. Additionally each 18 mg capsule shell contains: iron oxide yellow, each 25 mg and 40 mg capsule shell contains: FD & C blue # 2, each 60 mg capsule shell contains: FD & C blue # 2 and iron oxide yellow and each 80 mg and 100 mg capsule shell contains: iron oxide red and iron oxide yellow. The capsule is printed with black pharmaceutical ink which contains following ingredients: black iron oxide, potassium hydroxide, propylene glycol and shellac. Atomoxetine capsules

Azathioprine is an immunosuppressive antimetabolite. Each uncoated azathioprine tablet intended for oral administration contains 25 mg or 50 mg or 75 mg or 100 mg of azathioprine. In addition, each tablet contains the following inactive ingredients: croscarmellose sodium, lactose monohydrate, magnesium stearate, povidone and starch. Azathioprine is chemically 6-[(1-methyl-4-nitro-1 H -imidazol-5-yl)thio]-1 H -purine. The structural formula of azathioprine is: It is an imidazolyl derivative of 6-mercaptopurine and many of its biological effects are similar to those of the parent compound. Azathioprine, USP is a pale yellow, odorless powder. It is insoluble in water, soluble in dilute solutions of alkali hydroxides, sparingly soluble in dilute mineral acids, very slightly soluble in alcohol and in chloroform. The sodium salt of azathioprine is sufficiently soluble to make a 10 mg/mL water solution which is stable for 24 hours at 59° to 77°F (15° to 25°C). Azathioprine is stable in solution at neutral or acid pH but hydrolysis to mercaptopurine occurs in excess sodium hydroxide (0.1N), especially on warming. Conversion to mercaptopurine also occurs in the presence of sulfhydryl compounds such as cysteine, glutathione, and hydrogen sulfide. structure formula for Azathioprine

Baclofen, USP is a muscle relaxant and antispastic. Its chemical name is 4-amino-3-(4-chlorophenyl)-butanoic acid. The structural formula is: C 10 H 12 ClNO 2 M.W. 213.66 Baclofen, USP is a white to off-white odorless or practically odorless crystalline powder. It is slightly soluble in water, very slightly soluble in methanol and insoluble in chloroform. Each tablet, for oral administration, contains 5 mg, 10 mg, 15 mg or 20 mg baclofen, USP. In addition, each tablet contains the following inactive ingredients: dibasic calcium phosphate anhydrous, magnesium stearate, microcrystalline cellulose, pregelatinized starch, povidone and sodium starch glycolate. Image

Each Balsalazide Disodium Capsules, USP contains 750 mg of balsalazide disodium, a prodrug that is enzymatically cleaved in the colon to produce mesalamine (5-aminosalicylic acid or 5-ASA), an aminosalicylate. Each capsule of balsalazide disodium (750 mg) is equivalent to 267 mg of mesalamine. Balsalazide disodium has the chemical name (E)-5-[[-4-[[(2-carboxyethyl)amino]carbonyl]phenyl]azo]-2-hydroxybenzoic acid, disodium salt, dihydrate. Its structural formula is: Molecular Weight: 437.31 Molecular Formula: C 17 H 13 N 3 Na 2 O 6 ·2H 2 O Balsalazide disodium is a yellow to orange crystalline powder. It is freely soluble in water and isotonic saline and DMSO, sparingly soluble in methanol and ethanol and practically insoluble in all other organic solvents. Inactive Ingredients: Each hard gelatin capsule contains colloidal silicon dioxide and magnesium stearate. Additionally, the capsule shell contains gelatin, titanium dioxide, iron oxide yellow, iron oxide black, and iron oxide red. The black ink contains shellac, iron oxide black, and potassium hydroxide. The sodium content of each capsule is approximately 79 mg. Sturucture

Docetaxel is an antineoplastic agent belonging to the taxoid family. The chemical name for docetaxel is (2R,3S)-N-carboxy-3-phenylisoserine,N-tert-butyl ester, 13-ester with 5β, 20-epoxy-1,2α,4,7β,10β,13α-hex-ahydroxytax-11-en-9-one 4-acetate 2-benzoate. Docetaxel has the following structural formula: Docetaxel is a white to almost-white powder with an empirical formula of C 43 H 53 NO 14 , and a molecular weight of 807.89. It is highly lipophilic and practically insoluble in water. BEIZRAY Injection for intravenous use is a sterile, non-pyrogenic, clear colorless liquid at 20 mg/mL concentration. Each mL contains 20 mg docetaxel (anhydrous) in 0.770 grams dehydrated alcohol (100% v/v) solution, with citric acid for pH adjustment. The BEIZRAY kit also contains a single dose vial of IV Solution Stabilizer, 50 mL of 25% Albumin Human USP solution. 25% Albumin Human USP is a clear, slightly viscous liquid; it is almost colorless or slightly yellow or green. The product contains 0.25 g Albumin Human USP per mL and is stabilized with 0.08 mmol sodium acetyltryptophanate and 0.08 mmol sodium caprylate per gram of albumin. Image

Benzonatate capsules, USP, a non-narcotic oral antitussive agent, is 2,5,8,11,14,17,20,23,26-nonaoxaoctacosan-28-yl p -(butylamino) benzoate; with a molecular weight of 603.7. Each benzonatate capsule for oral administration contains 100 mg or 200 mg of benzonatate. In addition, each capsule also contains the following inactive ingredients: gelatin, glycerin, noncrystallising sorbitol solution, methylparaben, propylparaben and purified water. Structure forluma for Benzonatate

Benztropine mesylate is a synthetic compound containing structural features found in atropine and diphenhydramine. It is designated chemically as 8-azabicyclo[3.2.1] octane, 3-(diphenylmethoxy)-, endo , methanesulfonate. Its empirical 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. Benztropine mesylate injection, USP is supplied as a sterile injection for intravenous and intramuscular use. Each milliliter of the injection contains: Benztropine mesylate USP----------------------------------------------------------------------------------1 mg Sodium chloride USP----------------------------------------------------------------------------------------9 mg Water for injection USP q.s.--------------------------------------------------------------------------------1 mL benztropine-fig-01

Betamethasone dipropionate cream USP, 0.05% contains betamethasone dipropionate USP, a synthetic adrenocorticosteroid, for dermatologic use. Betamethasone, an analog of prednisolone, has a high degree of glucocorticoid activity and a slight degree of mineralocorticoid activity. Betamethasone dipropionate, USP is a white to almost white crystalline powder. It is practically insoluble in water, sparingly soluble in alcohol and freely soluble in acetone, methylene chloride and chloroform. Chemically, it is 9-fluoro-11β,17,21-trihydroxy-16β-methylpregna-1,4-diene-3,20-dione 17,21-dipropionate. The structural formula is: Molecular Formula : C 28 H 37 FO 7 Molecular Weight : 504.60 Each gram contains 0.64 mg betamethasone dipropionate, USP (equivalent to 0.5 mg betamethasone) in a white to off-white cream of cetomacrogol 1000, cetostearyl alcohol, mineral oil, purified water, sodium phosphate monobasic, white petrolatum and chlorocresol is present as preservative. Image

Bortezomib for Injection, a proteasome inhibitor, contains bortezomib which is an antineoplastic agent. Bortezomib is a modified dipeptidyl boronic acid. The chemical name for bortezomib, the monomeric boronic acid, is [(1R)-3-methyl-1-[[(2S)-1-oxo-3-phenyl-2-[(pyrazinylcarbonyl) amino]propyl]amino]butyl] boronic acid. Bortezomib has the following chemical structure: The molecular weight is 384.24. The molecular formula is C 19 H 25 BN 4 O 4 . The solubility of bortezomib, as the monomeric boronic acid, in water is 3.3 to 3.8 mg/mL in a pH range of 2 to 6.5. Bortezomib for injection is available for intravenous injection or subcutaneous use. Each single-dose vial contains 3.5 mg of bortezomib as a sterile lyophilized powder. It also contains the inactive ingredient: 35 mg mannitol, USP. The product is provided as a mannitol boronic ester which, in reconstituted form, consists of the mannitol ester in equilibrium with its hydrolysis product, the monomeric boronic acid. The drug substance exists as a novel monomeric boronic acid monohydrate form. Image

Bosentan is an endothelin receptor antagonist that belongs to a class of highly substituted pyrimidine derivatives, with no chiral centers. It is designated chemically as 4-tert-butyl-N-[6-(2-hydroxy-ethoxy)-5-(2-methoxy-phenoxy)- [2,2´]-bipyrimidin-4-yl]- benzenesulfonamide monohydrate and has the following structural formula: Bosentan has a molecular weight of 569.64 and a molecular formula of C 27 H 29 N 5 O 6 S•H 2 O. Bosentan is a white yellowish powder and it is Soluble in acetonitrile, slightly soluble in methanol and practically insoluble in water. Bosentan is available as 62.5 mg and 125 mg film-coated tablets for oral administration, and contains the following excipients: corn starch, ethylcellulose, glyceryl behenate, hypromellose, iron oxide yellow, iron oxide red, magnesium stearate, povidone, pregelatinized starch, sodium starch glycolate, titanium dioxide, triacetin, and talc. Each bosentan 62.5 mg tablet contains 64.541 mg of bosentan monohydrate, equivalent to 62.5 mg of bosentan. Each bosentan 125 mg tablet contains 129.082 mg of bosentan monohydrate, equivalent to 125 mg of bosentan. Bosentan tablets