SPL Set ID: cbf70fc3-14b3-4c17-8de8-acba1e12ac95
1 drug(s) with this SPL Set ID
Cysteine hydrochloride injection, USP (cysteine hydrochloride injection) is a sterile, nonpyrogenic solution for intravenous use supplied as 500 mg/10 mL cysteine hydrochloride, USP in a single-dose vial. Each mL of cysteine hydrochloride injection, USP contains 50 mg of cysteine hydrochloride, (equivalent to 34.5 mg of cysteine), and 0.006 mL of hydrochloric acid (6M) in water for injection. Sodium hydroxide and/or hydrochloric acid are used as needed to adjust the pH. The pH range of cysteine hydrochloride injection, USP is 1.0 to 1.5. The active ingredient is cysteine hydrochloride. The chemical name of cysteine hydrochloride is L-cysteine hydrochloride monohydrate. Its molecular formula is C 3 H 7 NO 2 S • HCI • H 2 O and molecular weight is 175.63. The chemical structure of L-cysteine hydrochloride monohydrate is depicted below: Cysteine hydrochloride is a white crystalline powder soluble in water. Cysteine is a sulfur-containing amino acid and is prone to oxidation when exposed to air in aqueous solution, which may convert cysteine to insoluble cystine resulting in precipitation over time. Cysteine hydrochloride injection, USP contains no more than 145 mcg/L of aluminum. Structural Formula