1H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione, 5,7-dimethyl- 4680-51-7 5,7-dimethyl-1H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione InChI=1/C7H8N4O2/c1-10-5-4(3-8-9-5)6(12)11(2)7(10)13/h3H,1-2H3,(H,8,9