5956-43-4 Ivasperin Ivasperine NAPHTHO(2,3-b)FURAN-2(3H)-ONE, 3a-alpha,4,4a-alpha,5,6,7,8,8a,9a-alpha-DECAHYDRO Naphtho(2,3-b)furan-2(3H)-one, 3a-alpha,4,4a-alpha,5,6,7,8,8a,9a-alpha-decahydro-7-alpha,8-beta-dihydroxy-8a-beta-methyl-3,5-dimethylene-