1004-74-6 2,4,5,6-Tetraaminopyrimidine 2,4,5,6-Tetraaminopyrimidine sulphate monohydrate 5-25-12-00377 (Beilstein Handbook Reference) BRN 0144442 EINECS 213-724-9 Pyrimidine, 2,4,5,6-tetraamino-