Methyl 4-(difluoromethyl)-3-methoxy-2-(trifluoromethyl)pyridine-5-carboxylate
Methyl 5-(difluoromethyl)-2-methoxy-3-(trifluoromethyl)pyridine-6-acetate
Methyl 4-(difluoromethyl)-5-methoxy-3-(trifluoromethyl)pyridine-2-acetate
Methyl 4-(difluoromethyl)-3-methoxy-2-(trifluoromethyl)pyridine-6-acetate