6-Chloro-5-(3,4-dichlorophenyl)picolinic acid
3,5-Bis(3,4-dichlorophenyl)-4-chloropyridine
3,6-Bis(3,4-dichlorophenyl)-2-chloropyridine
5-Chloro-3-(2,3-dichlorophenyl)pyridine-2-acetic acid
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