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