4-Methoxy-6-nitro-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
5-(Chloromethyl)-3-methoxy-4-nitro-2-(trifluoromethoxy)pyridine
5-Methoxy-3-nitro-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
3-Methoxy-5-nitro-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine