... -5 Empirical formula:C17H20N4O6 Appearance:oringe yellow powder Riboflavin VITAMIN B2, LACTOFLAVIN, FLAVINSynonyms: 7,8-dimethyl-10 (1'-D-ribityl) isoalloxazine ... , B-complex vitamin, Dolo-Neurotrat, flavin, flavine, lactoflavin, riboflavine, vitamin B2, vitamin G.CAS NO: 83-88-5Molecular Structure: Molecular Formula ...