2-Nitro-4-(trifluoromethoxy)-6-(trifluoromethyl)pyridine
4-(Fluoromethyl)-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
4-(Fluoromethyl)-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
5-(Fluoromethyl)-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine