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