1.Product: Cyanocobalamin Chemical Formula: C62H89CoN14O14P Appearance: dark red crystalline powder Chemical & physical parameters: Ratio absorbances A361/A278 NM A361/A550 NM 1.70 -1.90 3.15 -3.40 Loss on drying: below 12.0% Related Substances: ≤2.0 Pseudocyanocobalamin Comply with USP 30 Assay (on dried basis).≥ 96.0% Expiry date 3 years