Sapropterindrug info

Sapropterin dihydrochloride tablets are an orally administered Phenylalanine Hydroxylase activator (or PAH activator). Sapropterin dihydrochloride, the active pharmaceutical ingredient in sapropterin dihydrochloride tablets, is a synthetic preparation of the dihydrochloride salt of naturally occurring tetrahydrobiopterin (BH4). Sapropterin dihydrochloride is an off-white to pale yellow crystalline powder. The chemical name of sapropterin dihydrochloride is (6R)-2-amino-6-[(1R,2S)-1,2-dihydroxypropyl]-5,6,7,8-tetrahydro-4(1H)-pteridinone dihydrochloride and the molecular formula is C 9 H 15 N 5 O 3 ·2HCl with a molecular weight of 314.17. Sapropterin dihydrochloride has the following structural formula: Sapropterin dihydrochloride is supplied as tablets containing 100 mg of sapropterin dihydrochloride (equivalent to 76.8 mg of sapropterin base). Tablets are off-white to light yellow mottled uncoated round tablets debossed with “S 1” on one side and plain on other side. Each tablet contains the following inactive ingredients: ascorbic acid, crospovidone, dibasic calcium phosphate anhydrous, mannitol, riboflavin and sodium stearyl fumarate. Chemical Structure