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