WO2005063679-A1  DATABASE BEILSTEIN [Online] BEILSTEIN INSTITUTE FOR ORGANIC CHEMISTRY, FRANKFURT-MAIN, DE; XP002290994 retrieved from XFIRE accession no. RID9132004 & TAKAMURA-ENYA, T.; WATANABE, T. ET AL.: "Identification of a new mutagenic polychlorinated biphenyl derivative in the Waka river, Wakayama, Japan, showing activation of an aryl hydrocarbon receptor-dependent transcription" CHEM. RES. TOXICOL., vol. 15, no. 3, 2002, pages 419-425,;  DATABASE BEILSTEIN [Online] BEILSTEIN INSTITUTE FOR ORGANIC CHEMISTRY, FRANKFURT-MAIN, DE; XP002290994 retrieved from XFIRE accession no. RID9132004 &amp; TAKAMURA-ENYA, T.; WATANABE, T. ET AL.: &quot;Identification of a new mutagenic polychlorinated biphenyl derivative in the Waka river, Wakayama, Japan, showing activation of an aryl hydrocarbon receptor-dependent transcription&quot; CHEM. RES. TOXICOL., vol. 15, no. 3, 2002, pages 419-425,;  DATABASE BEILSTEIN [Online] BEILSTEIN INSTITUTE FOR ORGANIC CHEMISTRY, FRANKFURT-MAIN, DE; XP002290995 retrieved from XFIRE accession no. RID8201608 & BORSCHE; SCHOLTEN: CHEM. BER., vol. 50, 1917, page 608,;  DATABASE BEILSTEIN [Online] BEILSTEIN INSTITUTE FOR ORGANIC CHEMISTRY, FRANKFURT-MAIN, DE; XP002290995 retrieved from XFIRE accession no. RID8201608 &amp; BORSCHE; SCHOLTEN: CHEM. BER., vol. 50, 1917, page 608,;  VOGEL, H. AND MARVEL, C.S.: "Polybenzimidazoles.II" JOURNAL OF POLYMER SCIENCE, PART A, vol. 1, 1963, pages 1531-1541, XP002290993;  VOGEL, H. AND MARVEL, C.S.: &quot;Polybenzimidazoles.II&quot; JOURNAL OF POLYMER SCIENCE, PART A, vol. 1, 1963, pages 1531-1541, XP002290993EP1727781-A1  See references of WO 2005063679A1EP1727781-B1  DATABASE BEILSTEIN [Online] BEILSTEIN INSTITUTE FOR ORGANIC CHEMISTRY, FRANKFURT-MAIN, DE; XP002290994 retrieved from XFIRE accession no. RID9132004 &amp; TAKAMURA-ENYA, T.; WATANABE, T. ET AL.: &quot;Identification of a new mutagenic polychlorinated biphenyl derivative in the Waka river, Wakayama, Japan, showing activation of an aryl hydrocarbon receptor-dependent transcription&quot; CHEM. RES. TOXICOL., vol. 15, no. 3, 2002, pages 419-425,;  DATABASE BEILSTEIN [Online] BEILSTEIN INSTITUTE FOR ORGANIC CHEMISTRY, FRANKFURT-MAIN, DE; XP002290995 retrieved from XFIRE accession no. RID8201608 &amp; BORSCHE; SCHOLTEN: CHEM. BER., vol. 50, 1917, page 608,;  VOGEL, H. AND MARVEL, C.S.: &quot;Polybenzimidazoles.II&quot; JOURNAL OF POLYMER SCIENCE, PART A, vol. 1, 1963, pages 1531-1541, XP002290993