3-(Chloromethyl)-4-(difluoromethyl)-2-(trifluoromethyl)pyridine-5-carboxylic acid
4-(Chloromethyl)-5-(difluoromethyl)-3-(trifluoromethyl)pyridine-2-carboxylic acid
3-(Chloromethyl)-2-(difluoromethyl)-6-(trifluoromethyl)pyridine-5-carboxylic acid
3-(Chloromethyl)-2-(difluoromethyl)-5-(trifluoromethyl)pyridine-6-carboxylic acid