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