Synonyms: Acetanilide, 4′-[(5-methyl-3-isoxazolyl)sulfamoyl]- (6CI,7CI,8CI), N-[4-[[(5-Methyl-3-isoxazolyl)amino]sulfonyl]phenyl]acetamide, 4′-Acetyl-3-sulfa-5-methylisoxazole, Acetylsulfamethoxazole, N-Acetylsulfamethoxazole, N4-Acetylsulfamethoxazole, N4-Acetylsulfisomezole, STX 606, Sulfisomezole-N4-acetate, N4-Acetylsulfamethoxazole