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