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