SPL Set ID: 13541167-95f4-4cb9-9d7d-3c1aced5c5f6
1 drug(s) with this SPL Set ID
Methadone Hydrochloride Injection USP, 10 mg/mL is an opioid analgesic for parenteral use (intravenous, intramuscular or subcutaneous use). Methadone Hydrochloride Injection USP, 10 mg/mL contains methadone hydrochloride as the active pharmaceutical ingredient. Methadone hydrochloride is a white, crystalline material that is water-soluble. Methadone hydrochloride is chemically described as 6-(dimethylamino)-4,4- diphenyl-3-hepatanone hydrochloride. 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. Methadone hydrochloride has the following structural formula: Methadone Hydrochloride Injection is a sterile injectable solution available in 20 mL multiple-dose vials. Each mL of the Methadone Hydrochloride Injection contains: 10 mg of methadone hydrochloride (equivalent to 8.95 mg of methadone free base), 5 mg of chlorobutanol, as a preservative, 9 mg of sodium chloride, as tonicity agent, and hydrochloric acid and sodium hydroxide as pH adjusters, in water for injection. The pH of the sterile injectable solution is between 3.0 to 6.5. Chemical Structure