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Mecobalamin is α-(5,6-dimethylbenzimidazolyl)-Co-methyl-cobamide.
Molecular Formula: C63H91CoN13O14P.
Molecular Weight: 1344.4.
Mecobalamin occurs as a dark red, odorless and almost tasteless crystal or crystalline powder. It is sparingly soluble in water, methanol and ethanol and practically insoluble in acetone, ether and chloroform. Mecobalamin is hygroscopic and decomposes upon exposure to light.
Tablet: Each tablet contains 500 μg of mecobalamin.
Injection: pH 5.3-7.3.
Osmotic Pressure (to physiological saline): Approximately 1.
Excipients/Inactive Ingredients: Injection: Each ampoule also contains D-mannitol 50 mg as an additive.
