Methyl 5-chloro-2-(3,4-dichlorophenyl)nicotinate
Methyl 2-chloro-5-(3,4-dichlorophenyl)isonicotinate
3-Chloro-5-(3,4-dichlorophenyl)pyridine-2-acetic acid
4-Chloro-2-(3,4-dichlorophenyl)pyridine
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