4-(Aminomethyl)-5-hydroxy-3-(trifluoromethoxy)pyridine-2-acetic acid
6-(Chloromethyl)-4-hydroxy-3-nitro-2-(trifluoromethoxy)pyridine
4-(Aminomethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine-5-acetic acid
2-(Chloromethyl)-4-hydroxy-3-nitro-5-(trifluoromethoxy)pyridine