Product Description Methylcobalamin Other Details Molecular Formula: C63H91CoN13O14P Molecular Weight: 1344.38 CAS Number: 13422-55-4 Minimum Purity: >98% (HPLC), powder UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 25mg Leadtime:20 Days Sizes 2: 100mg Leadtime:20 Days Sizes 3: 500mg Leadtime:20 Days