2-(Difluoromethyl)-6-(trifluoromethyl)pyridine-3-carboxylic acid
2-(Chloromethyl)-5-(difluoromethyl)pyridine-3-acetic acid
2-(Difluoromethyl)-3-(trifluoromethyl)pyridine-4-carboxylic acid
Ethyl 3-(chloromethyl)-5-(difluoromethyl)pyridine-2-carboxylate