5-Hydroxy-3-nitro-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine
6-Hydroxy-2-iodo-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine
2-Hydroxy-6-iodo-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
5-Hydroxy-4-nitro-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine