5,6-Dimethyl-9-D-ribitylisoalloxazine 5984-80-5 6,7-Dimethyl-10-D-ribitylpyrimido[4,5-b]quinoxaline-2,4(3H,10H)-dione Isoalloxazine, 6,7-dimethyl-10-(D-ribo-2,3,4,5-tetrahydroxypentyl)- Isoalloxazine, 6,7-dimethyl-10-D-ribityl- Isoriboflavin Isoriboflavine NSC3100 Riboflavin, 8-demethyl-6-methyl- Riboflavine, 8-demethyl-6-methyl- X 18