SPL Set ID: a3087a39-f218-4f16-a1e7-17c39bb2eb69

Hydroxocobalamin injection is a sterile solution of hydroxocobalamin for intramuscular administration. Each mL contains: Hydroxocobalamin Acetate equivalent to 1000 mcg Hydroxocobalamin, Sodium Acetate Anhydrous 0.2 mg, Glacial Acetic Acid 0.442 mg, Sodium Chloride 8.2 mg, with Methylparaben 1.5 mg and Propylparaben 0.2 mg as preservatives, in Water for Injection q.s. Additional Glacial Acetic Acid and/or Sodium Acetate may have been used to adjust pH. pH range is 3.5 to 5.0. Hydroxocobalamin appears as dark red orthorhombic needles or as an amorphous or crystalline red powder. It is very hygroscopic in the anhydrous form, and moderately soluble in water. It has a molecular weight of 1346.37. The vitamin B 12 coenzymes are very unstable in light. Hydroxocobalamin shares the cobalamin molecular structure with cyanocobalamin. The chemical name is α-(5,6-dimethylbenzimidazoly) hydroxocobamide. The empirical formula is C 62 H 89 CoN 13 O 15 P and its structural formula is: The cobalt content is 4.34%. Hydroxocobalamin Structural Formula