Sofosbuvirdrug info

Tablets EPCLUSA is a fixed-dose combination tablet containing sofosbuvir and velpatasvir for oral administration. Sofosbuvir is a nucleotide analog HCV NS5B polymerase inhibitor and velpatasvir is an NS5A inhibitor. Each 400 mg/100 mg tablet contains 400 mg sofosbuvir and 100 mg velpatasvir, and each 200 mg/50 mg tablet contains 200 mg sofosbuvir and 50 mg velpatasvir. The tablets include the following inactive ingredients: copovidone, croscarmellose sodium, magnesium stearate, and microcrystalline cellulose. The tablets are film-coated with a coating material containing the following inactive ingredients: iron oxide red, polyethylene glycol, polyvinyl alcohol, talc, and titanium dioxide. Pellets EPCLUSA oral pellets are for oral administration, supplied as small, white to off-white pellets in unit-dose packets. Each unit-dose of EPCLUSA oral pellets contains either 200 mg sofosbuvir and 50 mg velpatasvir or 150 mg sofosbuvir and 37.5 mg velpatasvir and the following inactive ingredients: colloidal silicon dioxide, copovidone, croscarmellose sodium, lactose monohydrate, magnesium stearate, and microcrystalline cellulose. The oral pellets are film-coated with a coating material containing the following inactive ingredients: amino methacrylate copolymer, colloidal silicon dioxide, hypromellose, L-tartaric acid, polyethylene glycol, stearic acid, talc, and titanium dioxide.

Sofosbuvir: The IUPAC name for sofosbuvir is ( S )-isopropyl 2-(( S )-(((2 R,3 R,4 R,5 R )-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2 H )-yl)-4-fluoro-3-hydroxy-4-methyltetrahydrofuran-2-yl)methoxy)-(phenoxy)phosphorylamino)propanoate. It has a molecular formula of C 22 H 29 FN 3 O 9 P and a molecular weight of 529.45. It has the following structural formula: Sofosbuvir is a white to off-white crystalline solid with a solubility of at least 2 mg/mL across the pH range of 2–7.7 at 37 °C and is slightly soluble in water.

Velpatasvir: The IUPAC name for velpatasvir is methyl {(1 R )-2-[(2 S,4 S )-2-(5-{2-[(2 S,5 S )-1-{(2 S )-2-[(methoxycarbonyl)amino]-3-methylbutanoyl}-5-methylpyrrolidin-2-yl]-1,11-dihydro[2]benzopyrano[4',3':6,7]naphtho[1,2- d ]imidazol-9-yl}-1 H -imidazol-2-yl)-4-(methoxymethyl)pyrrolidin-1-yl]-2-oxo-1-phenylethyl}carbamate. It has a molecular formula of C 49 H 54 N 8 O 8 and a molecular weight of 883.0. It has the following structural formula: Velpatasvir is practically insoluble (less than 0.1 mg/mL) above pH 5, slightly soluble (3.6 mg/mL) at pH 2, and soluble (greater than 36 mg/mL) at pH 1.2. Chemical Structure Chemical Structure