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