1,3-Indandione, 2-(2,3,4,5,6-pentamethylphenyl)- 17533-69-6 1H-Indene-1,3(2H)-dione, 2-(pentamethylphenyl)- 2-(2,3,4,5,6-Pentamethylphenyl)-1,3-indandione BRN 1993262