3-Hydroxy-4-methoxy-2-nitro-5-(trifluoromethoxy)pyridine
5-(Bromomethyl)-4-hydroxy-3-methoxy-2-(trifluoromethoxy)pyridine
5-(Aminomethyl)-2-hydroxy-3-methoxy-4-(trifluoromethoxy)pyridine
2-(Fluoromethyl)-3-hydroxy-5-methoxy-4-(trifluoromethoxy)pyridine