3-Chloro-2,6-difluoro-5-(trifluoromethoxy)pyridine
6-Chloro-2,3-difluoro-4-(trifluoromethoxy)pyridine
2,4-Difluoro-3-methyl-6-(trifluoromethoxy)pyridine
2,6-Difluoro-3-methoxy-5-(trifluoromethoxy)pyridine
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