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