1,3-Dimethyl-8-azaxanthin 1H-1,2,3-Triazolo[4,5-d]pyrimidine-5,7(4H,6H)-dione, 4,6-dimethyl- 1H-s-Triazolo[4,5-d]pyrimidine-5,7(4H,6H)-dione, 4,6-dimethyl- 2278-15-1 4,6-Dimethyl-1H-s-triazolo[4,5-d]pyrimidine-5,7(4H,6H)-dione NSC93412