2-Chloro-5-(3,4-dichlorophenyl)-4-iodopyridine
2-Chloro-5-(3,4-dichlorophenyl)-3-iodopyridine
5-Chloro-2-(3,4-dichlorophenyl)-3-iodopyridine
2,3-Dichloro-4-(2,6-dichlorophenyl)pyridine
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