2-Hydroxy-5-nitro-4-(trifluoromethoxy)pyridine-3-carbonyl chloride
5-(Difluoromethyl)-2-hydroxy-3-methoxy-4-(trifluoromethoxy)pyridine
6-Hydroxy-4-nitro-2-(trifluoromethoxy)pyridine-3-carbonyl chloride
2-(Bromomethyl)-6-hydroxy-3-(trifluoromethoxy)pyridine-4-acetic acid