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