2'-Methyl-1,2:4,5-dibenzopyrene 2869-09-2 4-05-00-02806 (Beilstein Handbook Reference) 5-Methylnaphtho(1,2,3,4-def)chrysene BRN 2534249 NAPHTHO(1,2,3,4-def)CHRYSENE, 5-METHYL-