9,10-Dichlorophenanthrene is a chlorinated polycyclic aromatic hydrocarbon and is generally regarded as a carcinogen. It could activate the aryl hydrocarbon receptor (AhR).
References:
[1]. Ohura T, Morita M, Makino M, Amagai T, Shimoi K. Aryl hydrocarbon receptor-mediated effects of chlorinated polycyclic aromatic hydrocarbons. Chem Res Toxicol. 2007 Sep;20(9):1237-41.
[2]. Ohura T, Morita M, Kuruto-Niwa R, Amagai T, Sakakibara H, Shimoi K. Differential action of chlorinated polycyclic aromatic hydrocarbons on aryl hydrocarbon receptor-mediated signaling in breast cancer cells. Environ Toxicol. 2010 Apr;25(2):180-7.
References:
[1]. Ohura T, Morita M, Makino M, Amagai T, Shimoi K. Aryl hydrocarbon receptor-mediated effects of chlorinated polycyclic aromatic hydrocarbons. Chem Res Toxicol. 2007 Sep;20(9):1237-41.
[2]. Ohura T, Morita M, Kuruto-Niwa R, Amagai T, Sakakibara H, Shimoi K. Differential action of chlorinated polycyclic aromatic hydrocarbons on aryl hydrocarbon receptor-mediated signaling in breast cancer cells. Environ Toxicol. 2010 Apr;25(2):180-7.