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