5-Iodo-2-mercapto-3-(trifluoromethyl)pyridine
4-Methyl-2-nitro-5-phenylpyridine
3-Methyl-2-nitro-6-phenylpyridine
4-Chloro-5-(difluoromethyl)-3-methoxypyridine-2-sulfonyl chloride
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