1,3,2-Dioxaborolane,2,2'-(9,9'-spirobi[9H-fluorene]-2,7-diyl)bis[4,4,5,5-tetramethyl-

1,3,2-Dioxaborolane,2,2'-(9,9'-spirobi[9H-fluorene]-2,7-diyl)bis[4,4,5,5-tetramethyl- · CAS 728911-52-2