3-(2-(5-Nitrofurfurylidene)hydrazino)pyrimido(4,5-e)-as-triazine-6(5H),8(7H)-dione 75319-57-2 BRN 5155147 Pyrimido(4,5-e)-as-triazine-6(5H),8(7H)-dione, 3-(2-(5-nitrofurfurylidene)hydrazino)-