Synonyms: Cobinamide,cyanide hydroxide, dihydrogen phosphate (ester), inner salt, 3'-ester with 1-a-D-ribofuranosyl-5-benzimidazolol(8CI); Cobinamide, cyanide, dihydrogen phosphate (ester), inner salt, 3'-esterwith 1-a-D-ribofuranosyl-1H-benzimidazol-5-ol;5-Hydroxy-a-benzimidazolylcobamide;5-Hydroxybenzimidazole vitamin B12; Cobamide,cyano(5-hydroxy-1H-benzimidazolyl)-; Cyano-5-hydroxybenzimidazolylcobamide;Factor I; Factor I (vitamin B12 analog); Factor III; Factor III (vitamin B12analog); NSC 514684; Vitamin B12 5-hydroxybenzimidazole analog; Vitamin B12III; Vitamin B12, 5-hydroxy-1H-benzimidazole analog; a-(5-Hydroxybenzimidazolyl)cobamidecyanide; a-5-(Hydroxibenzimidazoyl)-cobinamid-cyanid