6-ethyl-2-amino-5-(4-chloro-phenyl)-3H-pyrimidine-4-thione

Diacetamidopyrimethamine

2-氨基-4-羟基-6-乙基嘧啶

2,4-二氨基-6-乙基嘧啶

2-氨基-4-氯-6-乙基嘧啶