1H-Indene, 2,3-dihydro-4,7-dimethyl- 2,3-Dihydro-4,7-dimethyl-1H-indene 4,7-Dimethyl-[2,3-dihydroindene] 4,7-Dimethylindan 6682-71-9 Indan, 4,7-dimethyl- NSC81389