CAS 38218-51-8 appears in our catalog under these names: 34-Methylcyanocobalamin, Cyanocobalamin Impurity 10(34-Methylcyanocobalamin), Cobinamide, Nb-methyl-, cyanide, dihydrogen phosphate (ester), inner salt, 3′-ester with 5,6-dimethyl-1-α-D-ribofuranosyl-1H-benzimidazole, 95%, 95%. Offered by: Chemat Brand, Hubei YoungXin, Chemat. Available pack sizes: on request, 10mg, 25mg, 50mg, 100mg, 200mg.