2-(Difluoromethyl)-3-hydroxy-5-methyl-6-(trifluoromethoxy)pyridine
2-(Difluoromethyl)-3-hydroxy-4-methyl-5-(trifluoromethoxy)pyridine
6-(Bromomethyl)-4-hydroxy-3-iodo-2-(trifluoromethoxy)pyridine
3-(Fluoromethyl)-6-hydroxy-4-methyl-2-(trifluoromethoxy)pyridine