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