2-Cyano-4-nitro-3-(trifluoromethoxy)pyridine-6-sulfonyl chloride
3-(Aminomethyl)-2-cyano-4-(trifluoromethoxy)pyridine-6-acetic acid
2-Fluoro-5-hydroxy-3-nitro-4-(trifluoromethoxy)pyridine
2-(Aminomethyl)-6-cyano-5-(trifluoromethoxy)pyridine-3-acetic acid