2,4-Diamino-6-methyl-5-phenylazopyrimidine 2,4-Pyrimidinediamine, 6-methyl-5-(phenylazo)- 34289-21-9 4-25-00-04667 (Beilstein Handbook Reference) BRN 0226657 Py-77 Pyrimidine, 2,4-diamino-6-methyl-5-phenylazo-