3-(Thiadiazo-2'-ylamino)-5,6,7,8-tetrahydropyrimido(4,5-e)(1,2,4)triazine-6,8-dione 3-(Thiadiazo-2'-ylamino)-pyrimido(4,5-e)-as-triazine-6(5H),8(7H)-dione 80761-65-5 BRN 5110856 Pyrimido(4,5-e)-as-triazine-6(5H),8(7H)-dione, 3-(thiadiazo-2'-ylamino)-