4-Amino-2-(chloromethyl)-6-nitro-3-(trifluoromethoxy)pyridine
4-Chloro-6-(difluoromethyl)-2-hydroxy-3-methoxypyridine
4-Fluoro-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride
6-Cyano-3-(difluoromethyl)-4-methoxypyridine-2-sulfonyl chloride
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