(2,2'-BIINDAN)-1,1',3,3'-TETRONE, 2,2'-DIPHENYL- (2,2'-Bi-1H-indene)-1,1',3,3'(2H,2'H)-tetrone, 2,2'-diphenyl- 1801-21-4 2,2'-Diphenyl-(2,2'-biindan)-1,1',3,3'-tetrone 3-07-00-04822 (Beilstein Handbook Reference) BRN 2022610 NSC 106668