1,1′-(6,6′-Dihydroxy-5,5′-dimethoxy[1,1′-biphenyl]-3,3′-diyl)bis-ethanone 4′,4′′′-Dihydroxy-5′,5′′′-dimethoxy-3′,3′′′-biacetophenone (8CI) Dehydrodiacetovanillone Diapocynin Ethanone, 1,1'-(6,6'-dihydroxy-5,5'-dimethoxy[1,1'-biphenyl]-3,3'-diyl)bis- Diapocynin >=98% (HPLC)