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