methylcobalamin and its Impurities

A form of vitamin B12, which is a type of cobalamin. It is used for the treatment of pernicious anemia, peripheral neuropathy, and diabetic neuropathy. It occurs naturally and can be prepared synthetically from cyanocobalamin . Reference standards of Methylcobalamin API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.