1 deoxy 1 7 8 dimethyl 2 4 dioxo 3 4 dihydrobenzo g pteridin 10 2h yl pentitol, 6 7 dimethyl 9 d ribitylisoalloxazine, 7 8 dimethyl 10 d ribo 2 3 4 5 tetrahydroxypentyl benzo g pteridine 2 4 3h 10h dione
For the treatment of ariboflavinosis (vitamin B2 deficiency).