(3aS)-3,3aalpha,4alpha,4a,7aalpha,8,9,9aalpha-Octahydro-4-hydroxy-4abeta,8 alpha-dimethyl-3-methyleneazuleno(6,5-b)-furan-2,5-dione 4-18-00-01434 (Beilstein Handbook Reference) 6754-13-8 6alpha,8beta-Dihydroxy-4-oxoambrosa-2,11(13)-dien-12-oic acid 12,8-lactone Ambrosa-2,11(13)-dien-12-oic acid, 6-alpha,8-beta-dihydroxy-4-oxo-, 12,8-lactone Ambrosa-2,11(13)-dien-12-oic acid, 6alpha,8beta-dihydroxy-4-oxo-, 12,8-lactone Ambrosa-2,11(13)-dien-12-oic acid, 6alpha,8beta-dihydroxy-4-oxo-, 12,8-lactone (8CI) Azuleno(6,5-b)furan-2,5-dione, 3,3a,4,4a,7a,8,9,9a-octahydro-4-hydroxy-4a,8-dimethyl-3-methylene-, (3aS-(3aalpha,4alpha,4abeta,7aalpha,8alpha,9aalpha))- Azuleno(6,5-b)furan-2,5-dione, 3,3a,4,4a,7a,8,9,9a-octahydro-4-hydroxy-4a,8-dimethyl-3-methylene-, (3aS-(3aalpha,4alpha,4abeta,7aalpha,8alpha,9aalpha))- (9CI) BRN 0028081 HELENALIN HSDB 3490 NSC 85236 PF 56