laurus labs limited - Medication Listings

Atorvastatin is an inhibitor of 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase. Atorvastatin calcium is calcium( βR,δR )-2-( p -fluorophenyl)- β,δ -dihydroxy-5-isopropyl-3-phenyl-4-(phenylcarbamoyl)pyrrole-1-heptanoate (1:2). The molecular formula of atorvastatin calcium is C 66 H 68 CaF 2 N 4 O 10 •3H 2 O and its molecular weight is 1,209.41. Its structural formula is: Atorvastatin calcium USP is a white to off white powder that is insoluble in aqueous solutions of pH 4 and below. Atorvastatin calcium USP is insoluble to very slightly soluble in distilled water, in pH 7.4 phosphate buffer, and in acetonitrile; very slightly soluble to soluble in alcohol (99.9%); and soluble to 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, lactose monohydrate, magnesium stearate, microcrystalline cellulose, Opadry White YS-1-7040 (hypromellose, polyethylene glycol, talc, titanium dioxide) and polysorbate 80. Meets USP Dissolution Test 3. structure

Metformin hydrochloride extended-release 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 -dimethyl imidodicarbonimidic diamide hydrochloride. The structural formula is as shown below: Metformin hydrochloride, USP is a white or almost white crystals with a molecular formula of C 4 H 11 N 5 •HCl and a molecular weight of 165.62. It is freely soluble in water, slightly soluble in 96% ethanol, practically insoluble in acetone and in methylene chloride. The pK a of metformin is 12.4. The pH of a 1% aqueous solution of metformin hydrochloride is 6.68. Metformin hydrochloride extended-release tablets, USP contains 500 mg or 750 mg of metformin hydrochloride USP, which is equivalent to 389.93 mg, 584.90 mg metformin base, respectively. Metformin hydrochloride extended-release tablets, USP 500 mg contain the inactive ingredients carboxymethylcellulose sodium, hypromellose, and magnesium stearate. Metformin hydrochloride extended-release tablets, USP 750 mg contain the inactive ingredients carboxymethylcellulose sodium, hypromellose, and magnesium stearate. Metformin Hydrochloride Extended-Release Tablets, USP meets USP Dissolution Test 11. 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, USP 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. It is freely soluble in water and is practically insoluble in acetone, ether, and chloroform. The pK a 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, 850 mg, or 1,000 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 colloidal silicon dioxide, croscarmellose sodium, magnesium stearate and povidone. In addition, the tablet coating material of 500 mg, 850 mg and 1,000 mg tablets contain hypromellose, polyethylene glycol 3350, polyvinyl alcohol, talc, titanium dioxide and artificial blackberry flavor. metformin-structure.jpg

The active ingredient in gabapentin capsules, USP and 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 crystalline solid. 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 capsule, USP contains 100 mg, 300 mg, or 400 mg of gabapentin USP and the following inactive ingredients: mannitol, pregelatinized starch and talc. The empty hard gelatin capsule shell consists of gelatin, sodium lauryl sulfate, and titanium dioxide. In addition 300 mg also contains iron oxide yellow and 400 mg also contains iron oxide red and iron oxide yellow. The capsules are printed with edible ink containing FD&C blue no. 2 aluminum lake and shellac. Each gabapentin tablet, USP contains 600 mg or 800 mg of gabapentin USP and the following inactive ingredients: copovidone, maize starch 5%, microcrystalline cellulose, magnesium stearate and poloxamer P407. In addition, the film coating contains the following inactive ingredients: polyethylene glycol 3350, polyvinyl alcohol-part hydrolyzed, titanium dioxide and talc. FDA approved dissolution testing specifications differ from USP for gabapentin tablets, USP. Structure

Abacavir and Lamivudine Abacavir and lamivudine tablets, USP contain the following 2 synthetic nucleoside analogues: abacavir (ZIAGEN, also a component of TRIZIVIR) and lamivudine (also known as EPIVIR or 3TC) with inhibitory activity against HIV-1. Abacavir and lamivudine tablets, USP are for oral administration. Each orange colored, capsule-shaped, biconvex film coated tablet contains the active ingredients 600 mg of abacavir as abacavir sulfate USP and 300 mg of lamivudine USP, and the inactive ingredients magnesium stearate, microcrystalline cellulose, and sodium starch glycolate. The tablets are coated with a film (OPADRY orange YS-1-13065-A) that is made of FD&C Yellow No.6, hypromellose, polyethylene glycol 400, polysorbate 80, and titanium dioxide. Abacavir Sulfate, USP The chemical name of abacavir sulfate, USP is ( 1 S, 4R)- 4-[2-amino-6-(cyclopropylamino)-9 H -purin-9­yl]-2-cyclopentene-1-methanol sulfate (salt) (2:1). Abacavir sulfate is the enantiomer with 1S , 4R absolute configuration on the cyclopentene ring. It has a molecular formula of (C 14 H 18 N 6 O) 2 •H 2 SO 4 and a molecular weight of 670.74 g per mol. It has the following structural formula: Abacavir sulfate, USP is a white to almost white powder and is soluble in water. In vivo , abacavir sulfate dissociates to its free base, abacavir. Dosages are expressed in terms of abacavir. Lamivudine, USP The chemical name of lamivudine, USP is (2(1 H )-Pyrimidinone,4-amino-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]-, (2 R - cis )-. Lamivudine, USP is the (-)enantiomer of a dideoxy analogue of cytidine. Lamivudine, USP has also been referred to as (-)2′,3′-dideoxy, 3′-thiacytidine. It has a molecular formula of C 8 H 11 N 3 O 3 S and a molecular weight of 229.26 g per mol. It has the following structural formula: Lamivudine, USP is a white to almost white solid and is soluble in water, sparingly soluble in methanol, slightly soluble to practically insoluble in 96% ethanol and practically insoluble in acetone. FDA approved dissolution test specifications differ from USP. abacavir structure lamivudine structure

The active ingredient in atazanavir capsules is atazanavir sulfate USP, which is an HIV-1 protease inhibitor. The chemical name for atazanavir sulfate is (3 S ,8 S ,9 S ,12 S )-3,12-Bis(1,1-dimethylethyl)-8-hydroxy-4,11-dioxo-9-(phenylmethyl)-6-[[4-(2-pyridinyl)phenyl]methyl]-2,5,6,10,13-­ pentaazatetradecanedioic acid dimethyl ester, sulfate (1:1). Its molecular formula is C 38 H 54 N 6 O 11 S, which corresponds to a molecular weight of 802.93 (sulfuric acid salt). The free base molecular weight is 704.9. Atazanavir sulfate has the following structural formula: Atazanavir sulfate USP is a white to pale yellow crystalline powder. It is freely soluble in methanol and practically insoluble in water. Atazanavir capsules are available for oral administration in strengths of 150 mg, 200 mg, or 300 mg of atazanavir, which are equivalent to 170.8 mg, 227.8 mg, or 341.69 mg of atazanavir sulfate USP, respectively. The capsules also contain the following inactive ingredients: crospovidone, lactose monohydrate, and magnesium stearate. The capsule shells contain the following inactive ingredients: gelatin, FD&C Blue No. 2, FD & C Yellow 6, iron oxide yellow, and titanium dioxide. The capsules are printed with ink containing butyl alcohol, dehydrated alcohol, isopropyl alcohol, potassium hydroxide, propylene glycol, shellac, strong ammonia solution, and titanium dioxide. Atazanavir Structure

Efavirenz, emtricitabine and tenofovir disoproxil fumarate is a fixed-dose combination tablet containing EFV, FTC, and TDF. EFV is a non-nucleoside reverse transcriptase inhibitor (NNRTI). FTC is a synthetic nucleoside analog of cytidine. TDF, which is converted in vivo to tenofovir, is an acyclic nucleoside phosphonate (nucleotide) analog of adenosine 5'-monophosphate. Efavirenz, emtricitabine and tenofovir disoproxil fumarate tablets are for oral administration. Each film coated tablet contains efavirenz, USP 600 mg; emtricitabine, USP 200 mg and tenofovir disoproxil fumarate 300 mg equivalent to 245 mg of tenofovir disoproxil as active ingredients. The tablets include the following inactive ingredients: croscarmellose sodium, hydroxypropyl cellulose, magnesium stearate, microcrystalline cellulose, and sodium lauryl sulfate. The tablets are film coated with a coating material containing black iron oxide, polyethylene glycol, polyvinyl alcohol, red iron oxide, talc, and titanium dioxide. Efavirenz : EFV is chemically described as ( S )-6-chloro-4-(cyclopropylethynyl)-1,4-dihydro-4-(trifluoromethyl)-2 H -3,1-benzoxazin-2-one. Its molecular formula is C 14 H 9 ClF 3 NO 2 and its structural formula is: Efavirenz, USP is a white to off white powder with a molecular mass of 315.67. It is practically insoluble in water (less than 10 mcg/mL). Emtricitabine : The chemical name of FTC is 5-Fluoro-1-[(2 R ,5 S )-2-(hydroxymethyl)-1,3-oxathiolan-5-yl] cytosine. FTC is the (-) enantiomer of a thio analog of cytidine, which differs from other cytidine analogs in that it has a fluorine in the 5-position. It has a molecular formula of C 8 H 10 FN 3 O 3 S and a molecular weight of 247.30. It has the following structural formula: Emtricitabine, USP is a white to almost white crystalline powder. It is freely soluble in water. Tenofovir DF : TDF is a fumaric acid salt of the bis -isopropoxycarbonyloxymethyl ester derivative of tenofovir. The chemical name of TDF is 9-[( R )-2[[bis[[(isopropoxycarbonyl)oxy]-methoxy]phosphinyl]methoxy]propyl]adenine fumarate (1:1). It has a molecular formula of C 19 H 30 N 5 O 10 P●C 4 H 4 O 4 and a molecular weight of 635.52. It has the following structural formula: TDF is a white to off white powder. It is slightly soluble in water at 25°C. efavirenz-structure emtricitabine-structure tenofovir-structure

Efavirenz, lamivudine and tenofovir disoproxil fumarate tablets contain efavirenz (EFV), an HIV-1 specific, non-nucleoside, reverse transcriptase inhibitor (NNRTI), lamivudine (also known as 3TC), a synthetic nucleoside analogue with activity against HIV-1 and tenofovir disoproxil fumarate (TDF) (a prodrug of tenofovir), a fumaric acid salt of bis-isopropoxycarbonyloxymethyl ester derivative of tenofovir. TDF is converted in vivo to tenofovir, an acyclic nucleoside phosphonate (nucleotide) analog of adenosine 5'-monophosphate. Tenofovir exhibits activity against HIV-1 reverse transcriptase. Efavirenz, lamivudine and tenofovir disoproxil fumarate tablets are for oral administration. Each film coated tablet contains efavirenz USP 600 mg, lamivudine USP 300 mg and tenofovir disoproxil fumarate 300 mg equivalent to tenofovir disoproxil 245 mg, and the following inactive ingredients: croscarmellose sodium, hydroxypropyl cellulose, lactose anhydrous, magnesium stearate, microcrystalline cellulose, pregelatinized starch, polyethylene glycol, polyvinyl alcohol, sodium lauryl sulfate, talc and titanium dioxide. Efavirenz: The chemical name of efavirenz is ( S )-6-Chloro-4-(cyclopropylethynyl)-1,4-dihydro-4-(trifluoromethyl)-2 H -3,1-benzoxazin-2-one. Its molecular formula is C 14 H 9 ClF 3 NO 2 and its structural formula is: Efavirenz USP is a white to off white powder with a molecular mass of 315.67. It is soluble in methanol and practically insoluble in water (< 10 microgram/mL). Lamivudine: The chemical name of lamivudine is (-)-1-[(2 R ,5 S )-2-(Hydroxymethyl)-1,3-oxathiolan-5-yl]cytosine. Lamivudine is the (-)enantiomer of a dideoxy analogue of cytidine. Lamivudine has also been referred to as (-)2′,3′-dideoxy, 3′-thiacytidine. It has a molecular formula of C 8 H 11 N 3 O 3 S and a molecular weight of 229.26 g per mol. It has the following structural formula: Lamivudine USP is a white or almost white powder and is soluble in water. Tenofovir Disoproxil Fumarate: The chemical name of tenofovir DF is 9-[(R)-2- [[bis[[(isopropoxycarbonyl)oxy]methoxy]phosphinyl]methoxy]propyl]adenine fumarate (1:1). It has a molecular formula of C 19 H 30 N 5 O 10 P•C 4 H 4 O 4 and a molecular weight of 635.52. It has the following structural formula: Tenofovir DF is a white to off white powder freely soluble in dimethyl formamide, soluble in methanol and slightly soluble in water at 25°C. It has a partition coefficient (log p) of 0.75. Efavirenz Chemical Structure Lamivudine Chemical Structure Tenofovir Chemical Structure

Efavirenz, lamivudine and tenofovir disoproxil fumarate is a fixed-dose combination tablet for oral administration. Each film coated tablet contains efavirenz USP 400 mg, lamivudine USP 300 mg and tenofovir disoproxil fumarate 300 mg equivalent to tenofovir disoproxil 245 mg. Each tablet contains the following inactive ingredients: croscarmellose sodium, ferric oxide yellow, hydroxypropyl cellulose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polyvinyl alcohol, sodium lauryl sulfate, talc and titanium dioxide. Efavirenz: Efavirenz (EFV) is an HIV-1 specific, non-nucleoside, reverse transcriptase inhibitor (NNRTI). Efavirenz is chemically described as ( S )-6-Chloro-4-(cyclopropylethynyl)-1,4-dihydro-4-(trifluoromethyl)-2 H -3,1-benzoxazin-2-one. Its molecular formula is C 14 H 9 ClF 3 NO 2 and its structural formula is: Efavirenz USP is a white to off white powder with a molecular mass of 315.67. It is soluble in methanol and practically insoluble in water (< 10 microgram/mL). Lamivudine: Lamivudine (also known as 3TC) is a synthetic nucleoside analogue with activity against HIV-1 and HBV.The chemical name of lamivudine is (-)-1-[(2 R ,5 S )-2-(Hydroxy methyl)-1,3-oxathiolan-5-yl]cytosine. Lamivudine is the (-)enantiomer of a dideoxy analogue of cytidine. Lamivudine has also been referred to as (-)2′,3′-dideoxy, 3′-thiacytidine. It has a molecular formula of C 8 H 11 N 3 O 3 S and a molecular weight of 229.26 g per mol. It has the following structural formula: Lamivudine USP is a white or almost white powder and is soluble in water. Tenofovir Disoproxil Fumarate: Tenofovir disoproxil fumarate (TDF) (a prodrug of tenofovir) is a fumaric acid salt of bis-isopropoxycarbonyloxymethyl ester derivative of tenofovir. TDF is converted in vivo to tenofovir , an acyclic nucleoside phosphonate (nucleotide) analog of adenosine 5' -monophosphate. Tenofovir exhibits activity against HIV-1 reverse transcriptase. The chemical name of tenofovir disoproxil fumarateis 9-[( R )-2- [[bis[[(isopropoxycarbonyl)oxy]methoxy]phosphinyl]methoxy]propyl]adenine fumarate (1:1). It has a molecular formula of C 19 H 30 N 5 O 10 P•C 4 H 4 O 4 and a molecular weight of 635.52. It has the following structural formula: Tenofovir disoproxil fumarate is a white to off white powder freely soluble in dimethyl formamide, soluble in methanol and slightly soluble in water at 25°C. It has a partition coefficient (log p) of 0.75. efavirenz-structure lamivudine-structure tenofovir-structure

Emtricitabine and tenofovir disoproxil fumarate tablets are fixed-dose combination tablets containing emtricitabine (FTC) and tenofovir disoproxil fumarate (TDF). FTC is a synthetic nucleoside analog of cytidine. TDF is converted in vivo to tenofovir, an acyclic nucleoside phosphonate (nucleotide) analog of adenosine 5′-monophosphate. Both FTC and tenofovir exhibit inhibitory activity against HIV-1 reverse transcriptase. Emtricitabine USP: The chemical name of FTC is 5-Fluoro-1-[(2 R ,5 S )-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]cytosine. FTC is the (-) enantiomer of a thio analog of cytidine, which differs from other cytidine analogs in that it has a fluorine in the 5-position. It has a molecular formula of C 8 H 10 FN 3 O 3 S and a molecular weight of 247.30. It has the following structural formula: FTC is a white to almost white crystalline powder with a solubility of approximately 100 mg/mL in water at 25°C. The partition coefficient (log p) for emtricitabine is −1.07 and the pKa is 2.27. Tenofovir Disoproxil Fumarate: TDF is a fumaric acid salt of the bis-isopropoxycarbonyloxymethyl ester derivative of tenofovir. The chemical name of tenofovir DF is 9-[( R )-2-[[bis(isopropoxycarbonyl)oxy]methoxy]phosphinyl]methoxy]propyl]adenine fumarate. It has a molecular formula of C 19 H 30 N 5 O 10 P•C 4 H 4 O 4 and a molecular weight of 635.52. It has the following structural formula: Tenofovir disoproxil fumarate is a white to off white powder soluble in methanol, slightly soluble in water. The partition coefficient (log p) for tenofovir disoproxil is 0.75 and the pKa is 3.95. All dosages are expressed in terms of TDF except where otherwise noted. Emtricitabine and Tenofovir Disoproxil Fumarate Tablets are for oral administration, and are available in the following strength: Film-coated tablet containing emtricitabine USP 200 mg and tenofovir disoproxil fumarate 300 mg equivalent to tenofovir disoproxil 245 mg as active ingredients Emtricitabine and Tenofovir Disoproxil Fumarate Tablets also include the following inactive ingredients: croscarmellose sodium, lactose anhydrous, magnesium stearate, and microcrystalline cellulose. The tablets are coated with Opadry II White 32K580000, which contains hypromellose 2910, lactose monohydrate, titanium dioxide, and triacetin. Emtricitabine Structure Tenofovir Disoproxil Fumarate Structure

Fenofibrate tablets, USP are lipid regulating agents available as tablets for oral administration. Each tablet contains 48 mg or 145 mg of fenofibrate, USP. The chemical name for fenofibrate, USP is 2-[4-(4-chlorobenzoyl) phenoxy]-2-methyl-propanoic acid, 1-methylethyl ester with the following structural formula: The empirical formula is C 20 H 21 O 4 Cl and molecular weight is 360.83; fenofibrate, USP is insoluble in water. The melting point is 79 to 82°C. Fenofibrate, USP is white or almost white, crystalline powder which is stable under ordinary conditions. Inactive Ingredients Each tablet contains colloidal silicon dioxide, crospovidone, hypromellose 2910, lactose monohydrate, magnesium stearate, microcrystalline cellulose, sodium lauryl sulfate and sucrose. In addition, individual tablets contain: 48 mg tablets lecithin, polyvinyl alcohol, talc, titanium dioxide, xanthan gum, D&C yellow #10 aluminum lake, FD & C blue #2/indigo carmine aluminum lake and FD & C yellow #6/sunset yellow FCF aluminium lake. 145 mg tablets lecithin, polyvinyl alcohol, talc, titanium dioxide and xanthan gum. image

Fenofibrate tablet, USP are a lipid regulating agent available as tablets for oral administration. Each tablet contains 54 mg or 160 mg of fenofibrate, USP. The chemical name for fenofibrate is 2-[4-(4-chlorobenzoyl) phenoxy]-2-methyl-propanoic acid, 1-methylethyl ester with the following structural formula: The empirical formula is C 20 H 21 O 4 Cl and the molecular weight is 360.83; fenofibrate, USP is insoluble in water. The melting point is 79 to 82 ᵒ C. Fenofibrate, USP is a white or almost white, crystalline powder which is stable under ordinary conditions. Each 54 mg of fenofibrate tablet, USP contains the following inactive ingredients: Microcrystalline cellulose, colloidal silicon dioxide, crospovidone, lactose monohydrate, povidone, sodium lauryl sulfate, sodium stearyl fumarate, opadry AMB yellow powder. The opadry AMB yellow powder contains lecithin, polyvinyl alcohol, talc, titanium dioxide, D&C yellow #10 aluminum lake, FD & C blue #2/indigo carmine aluminum lake, FD & C yellow #6/sunset yellow FCF aluminum lake and xanthan gum. Each 160 mg of fenofibrate tablet, USP contains the following inactive ingredients: Microcrystalline cellulose, colloidal silicon dioxide, crospovidone, lactose monohydrate, povidone, sodium lauryl sulfate, sodium stearyl fumarate, opadry AMB white powder. The Opadry AMB white powder contains lecithin, polyvinyl alcohol, talc, titanium dioxide and xanthan gum. Fenofibrate tablets, USP meets USP Dissolution Test 3. Image

Fenofibric acid delayed-release capsules are lipid regulating agent available as delayed release capsules for oral administration. Each delayed release capsule contains choline fenofibrate, equivalent to 45 mg or 135 mg of fenofibric acid. The chemical name for choline fenofibrate is ethanaminium, 2-hydroxy-N,N,N-trimethyl, 2-{4-(4-chlorobenzoyl)phenoxy] -2-methylpropanoate (1:1) with the following structural formula: The molecular formula is C 22 H 28 ClNO 5 and the molecular weight is 421.9. Choline fenofibrate is very soluble in water and freely soluble in methanol. The melting point is approximately 210°C. Choline fenofibrate is a white to off-white crystalline powder. Each delayed release capsule contains enteric coated mini-tablets comprised of choline fenofibrate and the following inactive ingredients: Colloidal silicon dioxide, hydroxypropyl cellulose, hypromellose 2208, methacrylic acid and ethyl acrylate copolymer dispersion (sodium lauryl sulfate, polysorbate 80 and methacrylic acid and ethyl acrylate copolymer), povidone, sodium stearyl fumarate, talc and triethyl citrate. Capsule shell contains: gelatin, iron oxide black, iron oxide yellow, sodium lauryl sulfate and titanium dioxide. Additionally, 45 mg contains: iron oxide red. 135 mg contains: FD & C blue 1, FD & C red 3, FD & C red 40. The imprinting ink contains: black iron oxide, potassium hydroxide, propylene glycol, shellac and strong ammonia solution. Image

Flucytosine Capsules USP, an antifungal agent, is available as 250 mg and 500 mg capsules for oral administration. In addition to the active ingredient of 5-Fluorocytosine (Flucytosine) USP, each capsule contains colloidal silicon dioxide, lactose monohydrate, maize starch B, sodium starch glycolate and talc. The 250 mg capsule shell contains D&C Yellow 10, FD&C Blue 1, FD&C Yellow 6, gelatin, iron oxide black and titanium dioxide. The 500 mg capsule shell contains gelatin, iron oxide black and titanium dioxide. The capsules are printed with edible ink containing black iron oxide, shellac and potassium hydroxide. Chemically, flucytosine is 4-Amino-5-fluoropyrimidin-2(1 H )-one; Cytosine, 5-fluoro-. It is a white to off white crystalline solid with a molecular weight of 129.09 g/mol and the following structural formula: FDA approved dissolution test specifications differ from the USP. flucytosine-structure

Hydroxychloroquine is an antimalarial and antirheumatic drug, chemically described as 2-[[4-[(7-Chloro-4-quinolyl) amino]pentyl] ethylamino] ethanol sulfate (1:1) with the molecular formula C 18 H 26 ClN 3 O•H 2 SO 4 . The molecular weight of hydroxychloroquine sulfate is 433.95. Its structural formula is: Hydroxychloroquine sulfate USP is a white or off-white to slightly yellowish color powder, freely soluble in water and practically insoluble in ethanol. Hydroxychloroquine sulfate tablets, USP for oral administration contain 200 mg hydroxychloroquine sulfate (equivalent to 155 mg of hydroxychloroquine) and the following inactive ingredients: lactose monohydrate, magnesium stearate, maize starch and povidone. The film coating contains polyethylene glycol, polyvinyl alcohol, talc and titanium dioxide. FDA approved dissolution test specifications differ from USP. hydroxychloroquinestructure

Lopinavir and ritonavir tablets, USP are a co-formulation of lopinavir USP and ritonavir USP. Lopinavir is an inhibitor of the HIV-1 protease. As co-formulated in lopinavir and ritonavir tablets, ritonavir inhibits the CYP3A-mediated metabolism of lopinavir, thereby providing increased plasma levels of lopinavir. Lopinavir USP is chemically designated as [1 S -[1 R *,( R *),3 R *,4 R *]]- N -[4-[[(2,6- dimethylphenoxy)acetyl]amino]-3-hydroxy-5-phenyl-1-(phenylmethyl)pentyl]tetrahydro-α-(1-methylethyl)-2-oxo-1(2 H )-pyrimidineacetamide. Its molecular formula is C 37 H 48 N 4 O 5 , and its molecular weight is 628.8 g/mol. Lopinavir USP is a white to off-white color solid. It is freely soluble in methanol, soluble in isopropyl alcohol and practically insoluble in water. Lopinavir USP has the following structural formula: Ritonavir USP is chemically designated as 2,4,7,12-Tetraazatridecan-13-oic acid, 10-hydroxy-2-methyl-5-(1-methylethyl)-1-[2-(1-methylethyl)-4-thiazolyl]-3,6-di-oxo-8,11-bis(phenylmethyl)-5-thiazolylmethylester[5 S -(5 R *,8 R *,10 R *,11 R *)]-. Its molecular formula is C 37 H 48 N 6 O 5 S 2 , and its molecular weight is 720.94 g/mol. Ritonavir USP is a white or almost white solid. It is freely soluble in methanol and in dichloromethane; very slightly soluble in acetonitrile; practically insoluble in water. Ritonavir USP has the following structural formula: Lopinavir and ritonavir tablets, USP are available for oral administration in two strengths: Yellow tablets containing 200 mg of lopinavir USP and 50 mg of ritonavir USP. Yellow tablets containing 100 mg of lopinavir USP and 25 mg of ritonavir USP. The yellow, Lopinavir and Ritonavir Tablets USP, 200 mg/50 mg contain the following inactive ingredients: colloidal silicon dioxide, copovidone, sodium stearyl fumarate and sorbitan monolaurate. The following are the ingredients in the film coating: colloidal silicon dioxide, hydroxypropyl cellulose, hypromellose, iron oxide yellow, polyethylene glycol 400, polyethylene glycol 3350, polysorbate 80, talc, and titanium dioxide. The yellow, Lopinavir and Ritonavir Tablets USP, 100 mg/25 mg contain the following inactive ingredients: colloidal silicon dioxide, copovidone, sodium stearyl fumarate and sorbitan monolaurate. The following are the ingredients in the film coating: colloidal silicon dioxide, hydroxypropyl cellulose, hypromellose, iron oxide yellow, polyethylene glycol 400, polyethylene glycol 3350, polysorbate 80, talc, and titanium dioxide. lopinavir-structure ritonavir-structure

Oseltamivir phosphate capsules,USP an influenza neuraminidase inhibitor (NAI), is available as: • Capsules containing 30 mg, 45 mg, or 75 mg of oseltamivir for oral use, in the form of oseltamivir phosphate USP. In addition to the active ingredient, each capsule contains croscarmellose sodium, pregelatinized starch, polyvinylpyrrolidone, sodium stearyl fumarate and talc. The 30 mg capsule shell contains gelatin, iron oxide yellow and titanium dioxide. The 45 mg capsule shell contains gelatin, iron oxide black and titanium dioxide. The 75 mg capsule shell contains gelatin, iron oxide yellow, iron oxide black, and titanium dioxide. Each capsule is printed with blue ink, which includes FD & C Blue # 2 aluminum lake and shellac as the colorant. Oseltamivir phosphate USP, is a White to off-white solid with the chemical name (3 R ,4 R ,5 S )-4-acetylamino-5-amino-3(1-ethylpropoxy)-1-cyclohexene-1-carboxylic acid ethyl ester phosphate (1:1). The chemical formula is C 16 H 28 N 2 O 4 .H 3 PO 4 . The molecular weight is 312.4 for oseltamivir free base and 410.4 for oseltamivir phosphate salt. The structural formula is as follows: Meets USP Dissolution Test 2. oseltamivir-structure

Pirfenidone belongs to the chemical class of pyridone. Pirfenidone is available as a white opaque hard gelatin capsules containing 267 mg of pirfenidone USP for oral administration and as film-coated tablets containing 267 mg (yellow), 534 mg (orange) and 801 mg (brown) pirfenidone USP. Pirfenidone has a molecular formula of C 12 H 11 NO and a molecular weight of 185.23. Pirfenidone has the following structural formula, which has been referred to as 5-Methyl-1-Phenyl-1 H -pyridin-2-one or 5-Methyl-1-phenylpyridin-2(1 H )-one. Pirfenidone USP is a white to pale yellow or pink color solid, non-hygroscopic powder. It is more soluble in methanol, ethyl alcohol, acetone and chloroform than in water and 1.0 N HCl. The melting point is approximately 109°C. Pirfenidone capsules, USP contain pirfenidone USP and the following inactive ingredients: croscarmellose sodium, isomalt, and magnesium stearate. In addition, the capsule shell contains gelatin and titanium dioxide. The capsule brown printing ink includes black iron oxide, brown iron oxide, propylene glycol, and shellac. Pirfenidone tablets, USP contain pirfenidone USP and the following inactive ingredients: Colloidal silicon dioxide, croscarmellose sodium, mannitol, microcrystalline cellulose, povidone, and sodium stearyl fumarate. The film-coating material contains polyethylene glycol, polyvinyl alcohol, talc, and titanium dioxide. Additionally 267 mg tablets contain iron oxide yellow. 534 mg tablets contain FD&C yellow #6. 801 mg tablets contain black iron oxide and iron oxide red. Pirfenidone Chemical Structure

Sacubitril and valsartan tablets are a combination of a neprilysin inhibitor and an angiotensin II receptor blocker. Sacubitril and valsartan tablets contain a complex comprised of anionic forms of sacubitril and valsartan, and sodium cations in the molar ratio of 1:1:3, respectively. Following oral administration, the complex dissociates into sacubitril (which is further metabolized to LBQ657) and valsartan. The complex is chemically described as Tri sodium [3-((1 S ,3 R )-1-biphenyl-4-ylmethyl-3-ethoxycarbonyl-1-butylcarbamoyl)propionate-( S )-3’-methyl-2’-(pentanoyl{2”-(tetrazol-5-ylate)biphenyl-4’-ylmethyl}amino)butyrate]. Its molecular formula is C 48 H 55 N 6 O 8 ●3Na. Its molecular mass is 912.95 and its schematic structural formula is: Sacubitril and valsartan tablets are available as film-coated tablets for oral administration, containing 24 mg of sacubitril and 26 mg of valsartan; 49 mg of sacubitril and 51 mg of valsartan; and 97 mg of sacubitril and 103 mg of valsartan. The tablet inactive ingredients are crospovidone, low-substituted hydroxypropylcellulose, magnesium stearate, microcrystalline cellulose, and silicon dioxide. The film-coat inactive ingredients are hypromellose, titanium dioxide, Macrogol 4000, talc, and iron oxide red. The film-coat for the 24 mg of sacubitril and 26 mg of valsartan tablet and the 97 mg of sacubitril and 103 mg of valsartan tablet also contains iron oxide black. The film-coat for the 49 mg of sacubitril and 51 mg of valsartan tablet contains iron oxide yellow. sacubitrilvalsartan-structure

Ursodiol is a bile acid available as 300 mg capsules suitable for oral administration. Ursodiol, USP (ursodeoxycholic acid) is a naturally occurring bile acid found in small quantities in normal human bile and in the biles of certain other mammals. Ursodiol, USP (ursodeoxycholic acid) is a white or almost white crystalline powder, practically insoluble in water, freely soluble in ethanol (96%), slightly soluble in acetone and practically insoluble in methylene chloride. The chemical name for ursodiol is 3α,7β-Dihydroxy-5β-cholan-24-oic acid (C 24 H 40 O 4 ). Ursodiol, USP has a molecular weight of 392.6 g/mol. Its structure is shown below: Inactive Ingredients: Colloidal silicon dioxide, corn starch, and magnesium stearate. Gelatin capsules contain gelatin, iron oxide red, and titanium dioxide. The capsules are printed with edible ink containing black iron oxide, potassium hydroxide, propylene glycol, and shellac. Ursodiol Structure