Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 13422-55-4, Whether you call it Methylcobalamin, Co&#945, -[&#945, -(5 -6-Dimethylbenzimidazolyl)]-Co&#946, -methylcobamide or Mecobalamin you can be assured the Methylcobalamin products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.