Ethyl 4-(difluoromethyl)-2-(trifluoromethyl)pyridine-3-carboxylate
5-(Difluoromethyl)-3,4-dimethoxypyridine-2-carboxylic acid
Ethyl 3-(difluoromethyl)-5-(trifluoromethyl)pyridine-2-carboxylate
Ethyl 3-(difluoromethyl)-4-(trifluoromethyl)pyridine-2-carboxylate