I 1218 (OTTO) Indene, 90~95% Cas 95-13-6 - used in the synthesis of new C60 derivative, indene-C60 bisadduct. I 1218 (OTTO) Indene, 90~95% Cas 95-13-6 - used in preparing polyindene by the controlled cationic polymerization initiated with cumyl methyl ether/TiCl4 in CH2Cl22.