3-(Difluoromethyl)-2-methoxy-4-(trifluoromethyl)pyridine-6-carboxaldehyde
6-(Difluoromethyl)-2-methoxy-3-(trifluoromethyl)pyridine-4-carboxaldehyde
2-(Difluoromethyl)-6-methoxy-3-(trifluoromethyl)pyridine-5-carboxaldehyde
2-(Difluoromethyl)-5-methoxy-6-(trifluoromethyl)pyridine-3-carboxaldehyde