exelan pharmaceuticals inc. - Medication Listings

Pregabalin, USP is described chemically as ( S )-3-(aminomethyl)-5-methylhexanoic acid. The molecular formula is C 8 H 17 NO 2 and the molecular weight is 159.23. The chemical structure of pregabalin is: Pregabalin, USP is a white to off-white, crystalline solid with a pK a1 of 4.2 and a pK a2 of 10.6. It is freely soluble in water and both basic and acidic aqueous solutions. The log of the partition coefficient (n-octanol/0.05M phosphate buffer) at pH 7.4 is – 1.35. Pregabalin capsules are administered orally and are supplied as imprinted hard-shell capsules containing 25 mg, 50 mg, 75 mg, 100 mg, 150 mg, 200 mg, 225 mg, and 300 mg of pregabalin, USP along with pregelatinized starch, corn starch and talc as inactive ingredients. Capsule shells for 25 mg, 50 mg & 150 mg contains: gelatin & titanium dioxide Capsule shells for 75 mg, 100 mg, 200 mg, 225 mg & 300 mg contains: gelatin, FD&C Blue No.1, FD&C Red No.40, FD&C Yellow No.6 and titanium dioxide. Imprinting ink contains: shellac, dehydrated alcohol, isopropyl alcohol, butyl alcohol, propylene glycol, strong ammonia solution, black iron oxide, potassium hydroxide and purified water. Chemical Structure

Raloxifene hydrochloride, USP is an estrogen agonist/antagonist, commonly referred to as a selective estrogen receptor modulator (SERM) that belongs to the benzothiophene class of compounds. The chemical structure is: The chemical designation is methanone, [6-hydroxy-2-(4-hydroxyphenyl)benzo[b]thien-3-yl]-[4-[2-(1-piperidinyl) ethoxy]phenyl]-, hydrochloride. Raloxifene hydrochloride (HCl) has the empirical formula C 28 H 27 NO 4 S•HCl, which corresponds to a molecular weight of 510.05. Raloxifene HCl, USP is an off-white to pale-yellow solid that is very slightly soluble in water. Raloxifene hydrochloride tablets, USP are supplied in a tablet dosage form for oral administration. Each raloxifene hydrochloride tablet contains 60 mg of raloxifene HCl, USP which is the molar equivalent of 55.71 mg of free base. Inactive ingredients include mannitol, crospovidone, hydroxypropyl cellulose, poloxamer 407, magnesium stearate and opadry white (titanium Dioxide, hypromellose 2910 (3cP), hypromellose 2910 (6cP), macrogol/PEG 400 and polysorbate 80). structure

Ramipril USP is a 2‑aza‑bicyclo [3.3.0]‑octane‑3‑carboxylic acid derivative. It is a white to almost white, crystalline powder freely soluble in methanol. Ramipril melts between 105°C to 112°C. The CAS Registry Number is 87333-19-5. Ramipril's chemical name is (2 S, 3a S, 6a S )‑1-[( S )‑ N ‑[( S )‑1-Carboxy‑3‑phenylpropyl]alanyl]octahydrocyclopenta[ b ]pyrrole‑2‑carboxylic acid, 1‑ethyl ester. Ramipril Capsules USP are available for oral administration containing either 1.25 mg, 2.5 mg, 5 mg or 10 mg ramipril USP and the following inactive ingredient: pregelatinized starch. Each capsule shell contains black monogramming ink, gelatin and titanium dioxide. The black monogramming ink contains: black iron oxide, FD&C blue #2, FD&C red #40, FD&C yellow #6, propylene glycol and shellac glaze. The 1.25 mg capsule shell contains D&C yellow #10 and FD&C yellow #6. The 2.5 mg capsule shell contains FD&C yellow #6. The 5 mg capsule shell contains D&C red #28, FD&C blue #1 and FD&C yellow #6. The 10 mg capsule shell contains D&C red #28 and FD&C blue #1. The structural formula for ramipril is: Its molecular formula is C 23 H 32 N 2 O 5 , and its molecular weight is 416.51. Ramiprilat, the diacid metabolite of ramipril, is a non‑sulfhydryl ACE inhibitor. Ramipril is converted to ramiprilat by hepatic cleavage of the ester group. chem-structure.jpg

The active ingredient in sevelamer carbonate tablets is sevelamer carbonate, a polymeric amine that binds phosphate and is meant for oral administration. It was developed as a pharmaceutical alternative to sevelamer hydrochloride (Renagel ® ). Sevelamer carbonate is an anion exchange resin, with the same polymeric structure as sevelamer hydrochloride, in which carbonate replaces chloride as the counterion. While the counterions differ for the two salts, the polymer itself, the active moiety involved in phosphate-binding, is the same. Sevelamer carbonate is known chemically as poly(allylamine-co-N,N’-diallyl-1,3-diamino-2-hydroxypropane) carbonate salt. Sevelamer carbonate is hygroscopic, but insoluble in water. The structure is represented in Figure 1. Figure 1: Chemical Structure of Sevelamer Carbonate a, b = number of primary amine groups a + b = 9 c = number of cross-linking groups c = 1 m = large number to indicate extended polymer network Sevelamer Carbonate Tablets: Each film-coated tablet of sevelamer carbonate contains 800 mg of sevelamer carbonate on an anhydrous basis. The inactive ingredients are microcrystalline cellulose, silicified microcrystalline cellulose, crospovidone, hydroxy propyl cellulose, talc, colloidal silicon dioxide, sodium stearyl fumarate, hydroxy propyl methyl cellulose, and diacetylated monoglycerides. Chemical Structure/Figure 1

The active ingredient in sevelamer carbonate tablets is sevelamer carbonate, a polymeric amine that binds phosphate and is meant for oral administration. It was developed as a pharmaceutical alternative to sevelamer hydrochloride (Renagel ®) . Sevelamer carbonate is an anion exchange resin, with the same polymeric structure as sevelamer hydrochloride, in which carbonate replaces chloride as the counterion. While the counterions differ for the two salts, the polymer itself, the active moiety involved in phosphate binding, is the same. Sevelamer carbonate is known chemically as poly(allylamine-co-N,N’-diallyl-1,3-diamino-2-hydroxypropane) carbonate salt. Sevelamer carbonate is hygroscopic, but insoluble in water. The structure is represented in Figure 1. Figure 1. Chemical Structure of Sevelamer Carbonate a, b = number of primary amine groups a + b = 9 c = number of crosslinking groups c = 1 m = large number to indicate extended polymer network Sevelamer Carbonate Tablets: Each film-coated tablet contains 800 mg of sevelamer carbonate on an anhydrous basis. The inactive ingredients are microcrystalline cellulose, silicified microcrystalline cellulose, crospovidone, hydroxy propyl cellulose, talc, colloidal silicon dioxide, sodium stearyl fumarate, hydroxy propyl methyl cellulose and diacetylated monoglycerides. Chemical Structure/Figure 1

Tamsulosin hydrochloride is an antagonist of alpha 1A adrenoceptors in the prostate. Tamsulosin hydrochloride is (-)-( R)-5-[2-[[2-( o-Ethoxyphenoxy)ethyl]amino]propyl]-2-methoxybenzenesulfonamide, monohydrochloride. Tamsulosin hydrochloride is a white crystalline powder that melts with decomposition at approximately 230°C. It is sparingly soluble in water and methanol, slightly soluble in glacial acetic acid and ethanol, and practically insoluble in ether. The empirical formula of tamsulosin hydrochloride is C20H28N2O5S ∙ HCl. The molecular weight of tamsulosin hydrochloride is 444.98. Its structural formula is: Each tamsulosin hydrochloride capsule for oral administration contains tamsulosin hydrochloride, USP 0.4 mg, and the following inactive ingredients: methacrylic acid copolymer, microcrystalline cellulose, purified water, talc, triethyl citrate, black iron oxide, FD&C Blue No. 2, gelatin, red iron oxide, titanium dioxide, yellow iron oxide and trace amounts of antifoam DC 1510, industrial methylated spirit, lecithin, n-butyl alcohol, dehydrated alcohol, isopropyl alcohol, butyl alcohol, propylene glycol, ammonium, potassium hydroxide and shellac. Complies with USP Dissolution Test 4. Str.

Terbinafine tablets, USP contain the synthetic allylamine antifungal compound terbinafine hydrochloride. Chemically, terbinafine hydrochloride, USP is (E)- N -(6, 6-dimethyl-2-hepten-4-ynyl)- N -methyl-1-naphthalenemethanamine hydrochloride. The empirical formula C 21 H 26 CIN with a molecular weight of 327.90, and the following structural formula: Terbinafine hydrochloride, USP is a white to off-white fine crystalline powder. It is freely soluble in methanol and methylene chloride, soluble in ethanol, and slightly soluble in water. Each tablet contains: Active Ingredients: terbinafine hydrochloride (equivalent to 250 mg base) Inactive Ingredients: colloidal silicon dioxide NF, hypromellose USP, magnesium stearate NF, microcrystalline cellulose NF, and sodium starch glycolate NF. structure

Ticagrelor tablets contain ticagrelor, a cyclopentyltriazolopyrimidine, inhibitor of platelet activation and aggregation mediated by the P2Y12 ADP-receptor. Chemically it is (1S,2S,3R,5S)-3-[7-{[(1R,2S)-2-(3,4-difluorophenyl)cyclopropyl]amino}-5-(propylthio)-3H-[1,2,3]-triazolo[4,5-d]pyrimidin-3-yl]-5-(2-hydroxyethoxy)cyclopentane-1,2-diol. The molecular formula of ticagrelor is C23H28F2N6O4S and its molecular weight is 522.57. The chemical structure of ticagrelor is: Ticagrelor is a crystalline powder with an aqueous solubility of approximately 10 μg/mL at room temperature. Ticagrelor 90 mg tablets for oral administration contain 90 mg of ticagrelor and the following ingredients: lactose monohydrate, microcrystalline cellulose, croscarmellose sodium, colloidal silicon dioxide, pre-gelatinized starch, hydroxypropyl methylcellulose, stearic acid, titanium dioxide, polyethylene glycol 400, red iron oxide, polysorbate 80 and yellow iron oxide. Ticagrelor 60 mg tablets for oral administration contain 60 mg of ticagrelor and the following ingredients: lactose monohydrate, microcrystalline cellulose, croscarmellose sodium, colloidal silicon dioxide, pre-gelatinized starch, hydroxypropyl methylcellulose, stearic acid, titanium dioxide, polyethylene glycol 400, red iron oxide. Structure

Topiramate is a sulfamate-substituted monosaccharide. Topiramate tablets, USP are available as 25 mg, 50 mg, 100 mg, and 200 mg round tablets for oral administration. Topiramate, USP is a white crystalline powder with a bitter taste. Topiramate is most soluble in alkaline solutions containing sodium hydroxide or sodium phosphate and having a pH of 9 to 10. It is freely soluble in acetone, chloroform, dimethylsulfoxide, and ethanol. The solubility in water is 9.8 mg/mL. Its saturated solution has a pH of 6.3. Topiramate has the molecular formula C 12 H 21 NO 8 S and a molecular weight of 339.36. Topiramate is designated chemically as 2,3:4,5-Di-O-isopropylidene-β-D-fructopyranose sulfamate and has the following structural formula: Topiramate tablets contain the following inactive ingredients: lactose monohydrate, microcrystalline cellulose, pre-gelatinized starch (maize), sodium starch glycolate, magnesium stearate, opadry white (titanium dioxide, hypromellose 3cp, hypromellose 6cp, PEG 400, polysorbate 80) for 25 mg tablets, opadry yellow (titanium dioxide, hypromellose 3cp, hypromellose 6cp, PEG 400, polysorbate 80, iron oxide yellow) for 50 mg tablets, opadry yellow (hypromellose 3cp, hypromellose 6cp, titanium dioxide, PEG 400, iron oxide yellow, polysorbate 80, iron oxide red) for 100 mg tablets and, opadry pink (titanium dioxide, hypromellose 6cp, PEG 400,iron oxide red) for 200 mg tablets. Topiramate structure

Trospium chloride, USP is a quaternary ammonium compound with the chemical name of Spiro[8azoniabicyclo[3.2.1]octane-8,1'-pyrrolidinium], 3-[(hydroxydiphenylacetyl)oxy]-, chloride, (1α, 3β, 5α). The empirical formula of trospium chloride, USP is C 25 H 30 ClNO 3 and its molecular weight is 427.97. The structural formula of trospium chloride is represented below: Trospium chloride, USP is a fine, colorless to slightly yellow, crystalline solid. The compound’s solubility in water is approximately 1 g per 2 mL. Each trospium chloride tablet contains 20 mg of trospium chloride, USP a muscarinic antagonist, for oral administration. Each tablet also contains the following inactive ingredients: lactose monohydrate, microcrystalline cellulose, croscarmellose sodium, colloidal silicon dioxide, magnesium stearate, hypromellose 2910, titanium dioxide, polyethylene glycol 400, polysorbate 80, xylitol, sucralose, red iron oxide and yellow iron oxide. Meets USP Dissolution Test 2.

Vilazodone hydrochloride tablets for oral administration contain polymorph Form B vilazodone hydrochloride (HCl), a selective serotonin reuptake inhibitor and a 5HT 1A receptor partial agonist. Vilazodone HCl is 5-[4-[4-(5-cyano-1 H -indol-3-yl)butyl]piperazin-1-yl] benzofuran-2-carboxamide hydrochloride Dihydrate. Its molecular weight is 514.03 The structural formula is: In addition to the active ingredient, vilazodone hydrochloride tablets contain the following inactive ingredients: lactose monohydrate, microcrystalline cellulose, croscarmellose sodium, magnesium stearate, colloidal silicon dioxide, polyvinyl alcohol, titanium dioxide, polyethylene glycol 4000, talc, FD&C Blue No.1 (40 mg only), D&C Yellow No.10 (40 mg only),FD&C Yellow No.6 (10 mg and 20 mg), and FD&C Red No.40 (10 mg only). vilazodone_structure

Warfarin sodium, USP is an anticoagulant that acts by inhibiting vitamin K-dependent coagulation factors. The chemical name of warfarin sodium is 3-(α- acetonylbenzyl)-4-hydroxycoumarin sodium salt, which is a racemic mixture of the R - and S -enantiomers. Crystalline warfarin sodium is an isopropanol clathrate. Its empirical formula is C 19 H 15 NaO 4 , and its structural formula is represented by the following: Crystalline warfarin sodium occurs as a white, odorless, crystalline powder that is discolored by light. It is very soluble in water, freely soluble in alcohol, and very slightly soluble in chloroform and ether. Each warfarin sodium tablet, USP intended for oral administration contains warfarin sodium clathrates equivalent to 1 mg or 2 mg or 2.5 mg or 3 mg or 4 mg or 5 mg or 6 mg or 7.5 mg or 10 mg of warfarin sodium. In addition each tablet contains the inactive ingredients lactose monohydrate, starch, pregelatinized starch, hydroxypropyl cellulose, starlac and magnesium stearate. Additionally each 1 mg tablet contains: D&C Red #30 aluminum lake 2 mg tablet contains: FD&C Red #40 aluminum lake and FD&C Blue#2 2.5 mg tablet contains: D&C Yellow # 10 aluminum lake and FD&C Blue #2 3 mg tablet contains: FD&C Yellow # 6 aluminum lake, FD&C Blue#2 and FD&C Red # 40 aluminum lake 4 mg tablet contains: FD&C Blue#2 5 mg tablet contains: FD&C Yellow # 6 aluminum lake 6 mg tablet contains: FD&C Yellow # 6 aluminum lake and FD&C Blue #2 7.5 mg tablet contains: D&C Yellow # 10 aluminum lake and FD&C Yellow # 6 aluminum lake 10 mg tablet is dye free Chemical Structure

Zonisamide, USP is an antiseizure drug chemically classified as a sulfonamide and unrelated to other antiseizure agents. The active ingredient is zonisamide USP, 1,2-benzisoxazole-3-methanesulfonamide. The empirical formula is C 8 H 8 N 2 O 3 S with a molecular weight of 212.23. Zonisamide USP is a white powder, pKa = 10.2, and is moderately soluble in water (0.80 mg/mL) and 0.1 N HCl (0.50 mg/mL). The chemical structure is: Zonisamide is supplied for oral administration as capsules containing 25, 50 and 100 mg of zonisamide. Each capsule contains the labeled amount of zonisamide plus the following inactive ingredients: microcrystalline cellulose, hydrogenated vegetable oil, gelatin and colorants. Components of gelatin capsules,titanium dioxide, gelatin and Imprint ink dye (Black SW- 9008/SW-9009). In addition, 100 mg capsule conatins: FDA/E172 red iron oxide and 50 mg capsule contains: FD&C Blue No#2. structure