SPL Set ID: 3abfbffc-9e52-4fc6-ae92-6e0a97f4afe7
1 drug(s) with this SPL Set ID
Nalmefene hydrochloride injection, an opioid antagonist, is a 6-methylene analogue of naltrexone. The chemical structure is shown below: Molecular Formula: C 21 H 25 NO 3 ∙HCl Molecular Weight: 375.9, CAS # 58895-64-0 Chemical Name: 17-(Cyclopropylmethyl)-4,5 a -epoxy-6-methylenemorphinan-3,14-diol, hydrochloride salt. Nalmefene hydrochloride is a white to off-white crystalline powder which is freely soluble in water up to 130 mg/mL and slightly soluble in chloroform up to 0.13 mg/mL, with a pK a of 7.6. Nalmefene hydrochloride injection is available as a sterile solution for intravenous, intramuscular, and subcutaneous administration in concentration of 1 mg of nalmefene free base per mL. The 1 mg/mL concentration contains 1.108 mg of nalmefene hydrochloride per mL, 9.0 mg of sodium chloride per mL, and the pH is adjusted to 3.9 with hydrochloric acid. Concentration and dosage of nalmefene hydrochloride injection are expressed as the free base equivalent of nalmefene. Chemical Structure