2-Chloro-5-fluoro-3-(perchlorophenyl)pyridine
2-Chloro-3-fluoro-5-(perchlorophenyl)pyridine
2-Chloro-3-fluoro-4-(perchlorophenyl)pyridine
2,4-Bis(perchlorophenyl)-3-fluoro-6-(trifluoromethyl)pyridine
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