3-Chloro-2,4-difluoro-6-(trifluoromethoxy)pyridine
3-(Difluoromethyl)-5-nitro-2-(trifluoromethoxy)pyridine
4-Chloro-2,3-difluoro-6-(trifluoromethoxy)pyridine
3,4-Dichloro-2-(fluoromethyl)-5-(trifluoromethoxy)pyridine
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