3-Hydroxy-2-nitro-5-(trifluoromethoxy)pyridine-4-carbonyl chloride
5-(Chloromethyl)-3-hydroxy-4-methoxy-2-(trifluoromethoxy)pyridine
4-(Aminomethyl)-5-hydroxy-2-methoxy-3-(trifluoromethoxy)pyridine
3-(Chloromethyl)-5-hydroxy-2-methoxy-4-(trifluoromethoxy)pyridine