2,4-Diamino-5-phenyl-6-butylpyrimidine 27653-51-6 5-25-12-00260 (Beilstein Handbook Reference) 6-Butyl-2,4-diamino-5-phenylpyrimidine BRN 0661389 Pyrimidine, 2,4-diamino-6-butyl-5-phenyl- Pyrimidine, 6-butyl-2,4-diamino-5-phenyl-