1,4,7-Trimethyl-[2,3-dihydroindene] 1,4,7-Trimethylindan 1H-Indene, 2,3-dihydro-1,4,7-trimethyl- 2,3-Dihydro-1,4,7-trimethyl-1H-indene 54340-87-3 NSC22050