Vitamin B2 (Riboflavin) is essential for normal growth and nutrition. It plays a key role in energy metabolism and processing amino acids and fats. Riboflavin has a molecular formula of C17H20N4O6 and contains 4 hydroxyl groups. Its structure consists of a 6,7-dimethyl-isoalloxazine ring system attached to a ribitoyal sugar alcohol group. Vitamin B12 (Cyanocobalamin) is the first natural compound containing cobalt. It contains a corrin ring structure resembling the tetrapyrrole ring of porphyrins, with a single cobalt atom in the center bonded to 4 nitrogen atoms. It supports