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