nalmefene hydrochloride - Medications

Nalmefene Hydrochloride Injection Rx only DESCRIPTION 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•H 2 O Molecular Weight: 393.91, CAS # 1228646-72-7 Chemical Name: 17-(Cyclopropylmethyl)-4,5α-epoxy-6-methylenemorphinan-3,14-diol, hydrochloride salt, monohydrate Nalmefene hydrochloride is a white to almost 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 two concentrations, containing 100 µg or 1.0 mg of nalmefene free base per mL. The 100 µg/mL concentration contains 110.8 µg of nalmefene hydrochloride and the 1.0 mg/mL concentration contains 1.108 mg of nalmefene hydrochloride per mL. Both concentrations contain 9.0 mg of sodium chloride per mL and the pH is adjusted in the range of 3.3-3.5 with hydrochloric acid. Concentrations and dosages of Nalmefene Hydrochloride Injection are expressed as the free base equivalent of nalmefene. image description

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

OPVEE (nalmefene) nasal spray is a pre-filled, unit-dose intranasal spray. Nalmefene, an opioid antagonist, is a 6-methylene analogue of naltrexone. The molecular structure of nalmefene is presented below: Molecular Formula: C 21 H 25 NO 3 ∙HCl Molecular Weight: 375.9, CAS # 58895-64-0 Chemical Name: 17-(Cyclopropylmethyl)-4,5α-epoxy-6-methylenemorphinan-3,14-diol, hydrochloride salt. Nalmefene is a white to off-white crystalline powder which is freely soluble in methanol and water, with a pK of 7.63. Each OPVEE nasal spray unit delivers 2.7 mg nalmefene (equivalent to 3mg nalmefene hydrochloride) in 0.1 mL solution. Inactive ingredients include benzalkonium chloride, disodium ethylenediaminetetraacetate, dodecylmaltoside, sodium chloride, and purified water. The pH range is 4.1 to 4.9. Chemical Structure

ZURNAI™ (nalmefene injection) is a sterile, pre-filled, single-dose auto-injector designed to deliver a dose of 1.5 mg nalmefene (provided as nalmefene hydrochloride) in 0.5 mL. Nalmefene hydrochloride, an opioid antagonist, is a 6-methylene analogue of naltrexone. The molecular structure of nalmefene is presented below: Molecular Formula: C 21 H 25 NO 3 ∙HCl Molecular Weight: 375.9, CAS# 58895-64-0 Chemical Name: 17-(Cyclopropylmethyl)-4,5α-epoxy-6-methylenemorphinan-3,14-diol, hydrochloride salt Nalmefene 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 pKa of 7.63. Each ZURNAI auto-injector delivers 1.5 mg nalmefene (equivalent to 1.7 mg nalmefene hydrochloride) in 0.5 mL solution. The pH range is 3.5 to 4.5. The inactive ingredients in ZURNAI nalmefene injection include: hydrochloric acid to adjust pH; magnesium chloride, 4.7 mg; and water for injection. Chemical Structure