Methyl 3-(difluoromethyl)-4-methyl-2-(trifluoromethoxy)pyridine-5-acetate
Methyl 3-(fluoromethyl)-5-methyl-2-(trifluoromethoxy)pyridine-4-acetate
Methyl 3-(difluoromethyl)-2-methyl-6-(trifluoromethoxy)pyridine-4-acetate
Methyl 3-(difluoromethyl)-2-methyl-5-(trifluoromethoxy)pyridine-4-acetate