Authentication of 3,3'-dichloro-4,5-dimethoxy-biphenyl

3,3'-Dichloro-4,5-dimethoxy-biphenyl is a derivative of PCB 11 (3,3'-dichlorobiphenyl) and was synthesized as an analytical standard to study the metabolism of PCB 11, a polychlorinated biphenyl (PCB) congener that is not present in technical PCB mixtures. This compound was synthesized via Suzuki cross coupling of 5-bromo-3-chloro-1,2-dimethoybenzene and 3-chlorophenylboronic acid.

3,3'-二氯-4,5-二甲氧基联苯为PCB 11（3,3'-二氯联苯）的衍生物，系作为分析标准合成，用以研究PCB 11这一不在技术级PCB混合物中存在的多氯联苯（PCB）同系物的代谢过程。该化合物通过 Suzuki 偶联反应，以 5-溴-3-氯-1,2-二甲氧基苯与 3-氯苯硼酸为原料合成。