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