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