Crotamiton - N-Ethyl-N-(2-methylphenyl)-2-butenamide ;
Crotamiton EP Impurity-A- N-Ethyl-N-(2-methylphenyl)but-3-enamide ;
Crotamiton EP Impurity-B- (2E)-N-Ethyl-N-(3-methylphenyl)but-2-enamide ;