5-Cyano-2-(difluoromethyl)-4-nitropyridine-3-acetonitrile
2-Chloro-5-cyano-4-(fluoromethyl)-3-(trifluoromethoxy)pyridine
3-(3-(Trifluoromethoxy)-2-nitrobenzoyl)pyridine
3-Bromo-2-fluoro-6-mercaptopyridine
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