1,4-Dimethyl-1H-s-triazolo[4,5-d]pyrimidine-5,7(4H,6H)-dione 1632-29-7 1H-1,2,3-Triazolo[4,5-d]pyrimidine-5,7(4H,6H)-dione, 1,4-dimethyl- 1H-s-Triazolo[4,5-d]pyrimidine-5,7(4H,6H)-dione, 1,4-dimethyl- 3,7-Dimethyl-8-azaxanthin NSC94212