20223-76-1 Avenaciolid Avenaciolide Furo(3,4-b)furan-2,6(3H,4H)-dione, dihydro-3-methylene-4-octyl- (VAN) (8CI) Furo(3,4-b)furan-2,6(3H,4H)-dione, dihydro-3-methylene-4-octyl-, (3aR-(3aalpha,4alpha,6aalpha))- (9CI) NSC 179483