1,3,2-Dioxaborole, 2,2',2'',2'''-(9,9'-spirobi[9H-fluorene]-2,2',7,7'-tetrayl)tetrakis[4,4,5,5-tetramethyl-

1,3,2-Dioxaborole, 2,2',2'',2'''-(9,9'-spirobi[9H-fluorene]-2,2',7,7'-tetrayl)tetrakis[4,4,5,5-tetramethyl- · CAS 934391-22-7