Molecular formula: C72H100CoN18O17P
Molecular weight: 1579.58
Character: Dark red crystals or non-crystalline powder
Identification 1: The absorption exhibits maxima at 264 nm, 285 nm, 305 nm and 460 nm.
Identification 2 (HPLC): The principal peak obtained with the test solution for assay is consistent with the reference solution in retention time.
Identification 3 (IR): The infrared absorption atlas of this production should be consistent with the standard.
Hydroxocobalamin (UV): A460/A352 >0.90
Related Substances (HPLC): <1.0%
Loss on Drying: ≤ 12.0%
Assay (On anhydrous basis) (HPLC): 98.0% - 102.0%
Residual Solvent (GC):
Acetone: ≤ 0.5%
Ethanol: ≤ 0.5%
Total Plate Count (Plate culture): ≤ 1000 cfy/g