4-(Difluoromethyl)-5-methoxy-3-nitro-2-(trifluoromethoxy)pyridine
4-(Fluoromethyl)-6-methoxy-3-nitro-2-(trifluoromethoxy)pyridine
3-(Aminomethyl)-6-methoxy-2-(trifluoromethoxy)-5-(trifluoromethyl)pyridine
4-(Difluoromethyl)-3-methoxy-2-nitro-5-(trifluoromethoxy)pyridine