4-Cyano-2,3-diamino-6-(difluoromethyl)pyridine
5-(Difluoromethyl)-2-(trifluoromethyl)pyridine-4-sulfonyl chloride
4-(Difluoromethyl)-3-(trifluoromethyl)pyridine-5-sulfonyl chloride
4-(Difluoromethyl)-2-(trifluoromethyl)pyridine-5-sulfonyl chloride
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