SPL Set ID: 971e5f30-55c2-4193-9dd8-b43a1862b92a

Cyanocobalamin is a synthetic form of vitamin B 12 . The chemical name is 5,6-dimethyl-benzimidazolyl cyanocobamide. The cobalt content is 4.35%. The molecular formula is C 63 H 88 CoN 14 O 14 P, which corresponds to a molecular weight of 1355.38 and the following structural formula: Figure 1. Cyanocobalamin Nasal Spray Chemical Structure Cyanocobalamin occurs as dark red crystals or orthorhombic needles or crystalline red powder. It is very hygroscopic in the anhydrous form, and sparingly to moderately soluble in water (1:80). Its pharmacologic activity is destroyed by heavy metals (iron) and strong oxidizing or reducing agents (vitamin C), but not by autoclaving for short periods of time (15-20 minutes) at 121°C. The vitamin B 12 coenzymes are very unstable in light. Cyanocobalamin Nasal Spray is a solution of cyanocobalamin, USP (vitamin B 12 ) for administration as a spray to the nasal mucosa. Each unit dose device of Cyanocobalamin Nasal Spray contains 0.125 mL of a 500 mcg/0.1 mL solution of cyanocobalamin with benzalkonium chloride in purified water, citric acid, glycerin and sodium citrate. The spray solution has a pH between 4.5 and 5.5. Each spray delivers an average of 500 mcg of cyanocobalamin per actuation. chemical structure image