Similar names: Pyrimethamine; 5-(4-chlorophenyl)-6-ethylpyrimidine-2,4-diamine; 2,4-Diamino-5-(4-chlorophenyl)-6-ethylpyrimidine; 2,4-Diamino-5-p-chlorophenyl-6-ethylpyrimidine; 4753 R.P.; 5-(4-Chlorophenyl)-2,4-diamino-6-ethylpyrimidine; 5-(P-Chlorophenyl)-6-ethyl-2,4-diaminopyrimidine; BW 50-63; Chloridin; Chloridine; Darachlor; Darapram; Daraprim; Daraprime; Diaminopyritamin; Erbaprelina; Khloridin; Malacid; Malocid; Malocide; NSC 3061; Pirimecidan; Pirimetamin; Pyrimethamin; Pyrimethamine; RP 4753; Tindurin; Tinduring; WR 2978