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