5-Chloro-3-(2,5-dichlorophenyl)picolinic acid
2-Chloro-5-(2,5-dichlorophenyl)isonicotinaldehyde
6-Chloro-5-(2,5-dichlorophenyl)nicotinic acid
3-Chloro-2-(2,5-dichlorophenyl)-5-methoxypyridine
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