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