Ethyl 6-(difluoromethyl)-3-methyl-4-(trifluoromethoxy)pyridine-2-acetate
Ethyl 2-(difluoromethyl)-5-methyl-4-(trifluoromethoxy)pyridine-3-acetate
Ethyl 2-(difluoromethyl)-5-methyl-3-(trifluoromethoxy)pyridine-6-acetate
Ethyl 2-(difluoromethyl)-5-methyl-3-(trifluoromethoxy)pyridine-4-acetate