2,5-Dihydroxy-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine
2,4-Dihydroxy-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
3,5-Dichloro-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine
2,3-Dihydroxy-6-(trifluoromethoxy)-4-(trifluoromethyl)pyridine