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