2-(Bromomethyl)-4-cyano-3-hydroxy-5-(trifluoromethoxy)pyridine
2-(Bromomethyl)-3-cyano-5-hydroxy-6-(trifluoromethoxy)pyridine
3-(Aminomethyl)-6-cyano-4-hydroxy-2-(trifluoromethoxy)pyridine
4-(Aminomethyl)-3-cyano-2-hydroxy-5-(trifluoromethoxy)pyridine