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