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