1,2,6,7-Dibenzopyrene 189-64-0 3,4,8,9-Dibenzopyrene 3,4,8,9-Dibenzpyrene 4-05-00-02802 (Beilstein Handbook Reference) BRN 2054067 CCRIS 213 DB(a,h)P DIBENZO(A,H)PYRENE Dibenzo(a,h)pyrene [Polycyclic aromatic compounds] Dibenzo(a,h)pyrene [Polycyclic aromatic hydrocarbons] Dibenzo(b,def)chrysene EINECS 205-878-0 HSDB 4028