3-Bromo-5-(chloromethyl)-2-iodo-6-(trifluoromethoxy)pyridine
4-Cyano-3-(difluoromethyl)-6-fluoropyridine-2-sulfonyl chloride
5-Hydroxy-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride
6-Hydroxy-3-nitropyridine-2-acetic acid
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