33704-62-0 4(3aH)-Indanone, 7,7a-epoxytetrahydro-1,1,2,3,3-pentamethyl- 7,7a-Epoxytetrahydro-1,1,2,3,3-pentamethylindan-4(3aH)-one EINECS 251-650-9 Indeno(3a,4-b)oxiren-4(1aH)-one, hexahydro-5,5,6,7,7-pentamethyl-