SPL Set ID: 4c8b541c-33e8-4969-b258-af150808d46e
1 drug(s) with this SPL Set ID
Methadone hydrochloride is chemically described as 6-(dimethylamino)-4,4-diphenyl-3-hepatanone hydrochloride. Methadone hydrochloride USP is a white powder. Its molecular formula is C 21 H 27 NO·HCl and it has a molecular weight of 345.91. Methadone hydrochloride has a melting point of 235°C, and a pKa of 8.25 in water at 20°C. Its octanol/water partition coefficient at pH 7.4 is 117. A solution (1:100) in water has a pH between 4.5 and 6.5. It has the following structural formula: Each methadone hydrochloride tablet, USP contains 10 mg methadone hydrochloride USP and the following inactive ingredients: anhydrous lactose, compressible sugar, corn starch, magnesium stearate, microcrystalline cellulose, and talc. Chemical Structure