29752-43-0 5-18-05-00113 (Beilstein Handbook Reference) 6H-DIBENZO(b,d)PYRAN-6-ONE, 2,3,4,4a-TETRAHYDRO-2,3,7-TRIHYDROXY-9-METHOXY-4a-ME 6H-Dibenzo(b,d)pyran-6-one, 2,3,4,4a-tetrahydro-2,3,7-trihydroxy-9-methoxy-4a-methyl-, (2-alpha,3-beta,4a-beta)-(+-)- Altenuene BRN 4153870