5,8,8a,9-Tetrahydro-5-(3,4,5-trimethoxyphenyl)furo(3',4':6,7)naphtho(2,3-d)-1,3-dioxol-6(5aH)-one 69222-20-4 Furo(3',4':6,7)naphtho(2,3-d)-1,3-dioxol-6(5aH)-one, 5,8,8a,9-tetrahydro-5-(3,4,5-trimethoxyphenyl)- Isoanthricin Isodeoxypodophyllotoxin