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