4-Bromo-2-nitro-6-(trifluoromethoxy)pyridine-3-acetonitrile
3-Bromo-5-nitro-6-(trifluoromethoxy)pyridine-2-acetonitrile
4-Chloro-6-cyano-2-(trifluoromethoxy)pyridine-3-acetic acid
4-Chloro-2-cyano-5-(trifluoromethoxy)pyridine-3-acetic acid
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