(Carboxymethyl)cobalamin 14445-41-1 14517-61-4 28776-95-6 Co-(Carboxymethyl)cobalamin Cobinamide, Co-(carboxymethyl) deriv., dihydrogen phosphate (ester), inner salt, 3'-ester with 5,6-dimethyl-1-alpha-D-ribofuranosyl-1H-benzimidazole