1468-26-4 1H-1,2,3-Triazolo(4,5-d)pyrimidine-5,7(4H,6H)-dione 1H-v-Triazolo(4,5-d)pyrimidine-5,7(4H,6H)-dione 2,6-Dioxy-8-azapurine 8-AZAXANTHINE AI3-25011 Azaxanthine EINECS 215-992-2 NSC 756 USAF CB-26 Xanthazol v-Triazolo(4,5-d)pyrimidine-5,7-diol v-Triazolo(4,5-d)pyrimidine-5,7-diol (VAN)