Keywords: BPEN.svg Structural formula of the chemical compound 5 12-bis phenylethynyl naphthacene BPEN Strukturformel der chemischen Verbindung 5 12-Bis phenylethinyl naphthacen oder 5 12-Bis phenylethinyl tetracen BPEN 5 12-Bis phenylethynyl naphthacen 5 12-Bis phenylethynyl tetracen own Yikrazuul 2008-10-15 File 5 12-bis phenylethynyl naphthacene png PD-chem BPEN |