3-(Difluoromethyl)-2-nitro-6-(trifluoromethoxy)pyridine-4-methanol
4-(Difluoromethyl)-3-methoxy-6-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
2-(Difluoromethyl)-6-nitro-5-(trifluoromethoxy)pyridine-3-methanol
4-(Chloromethyl)-3-methoxy-2-(trifluoromethoxy)pyridine-5-acetic acid