3,4-Dichloro-5-(trifluoromethoxy)pyridine-2-sulfonyl chloride
5-Fluoro-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine
3,4-Dichloro-2-(trifluoromethoxy)pyridine-5-sulfonyl chloride
5-Fluoro-4-(difluoromethyl)-2-(trifluoromethoxy)pyridine
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