SPL Set ID: f935effe-e5b2-4bf7-bbde-6e80bb99076f
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 that is water-soluble. 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 5 mL of Methadone Hydrochloride Oral Solution contains 5 mg or 10 mg of methadone hydrochloride USP and the following inactive ingredients: alcohol (8%), benzoic acid, citric acid, FD&C Red #40, FD&C Yellow #6, flavoring (lemon), glycerin, sorbitol, and water. methadone-hcl-chem-structure.jpg