Methyl 3-(chloromethyl)-2-(difluoromethyl)-5-(trifluoromethoxy)pyridine-6-acetate
Methyl 3-(chloromethyl)-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-5-acetate
Methyl 2-(chloromethyl)-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine-5-acetate
5-(Chloromethyl)-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-acetic acid