Hydromorphone Hydrochloride Injection is an opioid agonist and available as an aqueous sterile solution, for use for intravenous, intramuscular and subcutaneous administration. It contains hydromorphone as active pharmaceutical ingredient in the form of hydrochloride salt. The chemical name of hydromorphone hydrochloride is 4,5α- epoxy-3-hydroxy-17-methylmorphinan-6-one hydrochloride. The molecular weight is 321.8 and it has the following chemical structure.
Hydromorphone hydrochloride is a white or almost white crystalline powder that is freely soluble in water, very slightly soluble in ethanol (96%), and practically insoluble in methylene chloride.
Each mL of Hydromorphone Hydrochloride Injection sterile solution contains 1 mg, 2 mg, or 4 mg of Hydromorphone Hydrochloride USP, equivalent to 0.89 mg, 1.77 mg or 3.55 mg of hydromorphone free base, respectively, 0.24 mg of Lactic Acid USP, 5.40 mg of Sodium Chloride as isotonicity agent, 8.93 mg of Sodium Lactate USP as buffering agent, and Lactic Acid USP and Sodium Hydroxide NF as pH adjusters, in Water for Injection. Hydromorphone Hydrochloride Injection pH range is 3.5 to 5.5.
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