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