Methyl 2-(difluoromethyl)-3-methoxy-4-(trifluoromethoxy)pyridine-6-acetate
Ethyl 3-(difluoromethyl)-6-methoxy-2-(trifluoromethoxy)pyridine-4-acetate
Ethyl 5-(difluoromethyl)-2-methoxy-4-(trifluoromethoxy)pyridine-3-acetate
3-(Difluoromethyl)-6-methoxy-2-(trifluoromethoxy)pyridine-5-acetic acid