1(3H)-Isobenzofuranone, 3,3-bis(1-butyl-2-methyl-1H-indol-3-yl)- 126909-33-9 160338-36-3 161279-44-3 3,3-Bis(1-butyl-2-methyl-1H-indol-3-yl)phthalide 50292-91-6 91825-06-8 EINECS 256-523-1