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