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