Methyl 4-(chloromethyl)-2-hydroxy-3-(trifluoromethoxy)pyridine-5-carboxylate
3-(Chloromethyl)-4-hydroxy-6-methyl-2-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-5-hydroxy-2-methyl-3-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-3-hydroxy-5-methyl-2-(trifluoromethoxy)pyridine