2,4-Diamino-5-(3-azido-4-chlorophenyl)-6-ethylpyrimidine 2,4-Mzp 2,4-Pyrimidinediamine, 5-(3-azido-4-chlorophenyl)-6-ethyl- 3-Azidopyrimethamamine ethanesulfonate 3-Azidopyrimethamine 95458-40-5 MZPES