23522-07-8 Naphtho[1,2-b]furan-2(3H)-one,3a,4,5,5a,6,7,8,9b-octahydro-6-hydroxy-3,5a,9-trimethyl- 41929-27-5 (3aS)-6β,8β-Diacetoxy-3aβ,4,5,5a,6,7,8,9bβ-octahydro-5aα,9-dimethyl-3-methylenenaphtho[1,2-b]furan-2(3H)-one 51848-01-2 2-Methyl-2-butenoic acid 2,3,3a,4,5,5a,8,9b-octahydro-3,5a,9-trimethyl-2,8-dioxonaphtho[1,2-b]furan-3-yl ester