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