SPL Set ID: e6712877-ace0-441c-99a9-adf567c0b9a2

Cyanocobalamin Injection, USP is a sterile solution of cyanocobalamin for intramuscular or subcutaneous injection. Each mL contains 1,000 mcg cyanocobalamin. Each vial also contains Sodium Chloride USP, 0.9%. Benzyl Alcohol NF, 1.5%, is present as a preservative. Dibasic Sodium Phosphate (Heptahydrate) USP 0.05% is present as a buffering agent. Hydrochloric acid NF and/or sodium hydroxide NF may have been added during manufacture to adjust the pH (range 4.5-7.0). Cyanocobalamin appears as crystals or deep red colored, odorless crystalline powder. It is very hygroscopic in the anhydrous form, and sparingly soluble in water (1:80). It is stable to autoclaving for short periods at 121°C. The vitamin B 12 coenzymes are very unstable in light. The chemical name is 5,6-dimethyl-benzimidazolyl cyanocobamide; the molecular formula is C 63 H 88 CoN 14 O 14 P. The cobalt content is 4.35%. The molecular weight is 1355.4. The structural formula is represented below. Image