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