5-Hydroxy-2-methyl-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
4-Hydroxy-5-methyl-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
3-(Difluoromethyl)-2-hydroxy-6-methyl-4-(trifluoromethoxy)pyridine
3-(Difluoromethyl)-2-hydroxy-4-methyl-6-(trifluoromethoxy)pyridine