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