Merck, C3607-5G, Cyanocobalamin

Cyanocobalamin (B₁₂) is a water soluble vitamin, which is mainly found in animal products, like dairy products, meat and eggs. It belongs to the B₁₂ class of vitamins, commonly called as cobalamins. Cyanocobalamin consists of four pyrrole rings with a central cobalt atom coordinated by four equatorial nitrogen ligands.