N-([1,1'-biphenyl]-2-yl)-N-([1,1'-biphenyl]-4-yl)-9,9'-spirobi[fluoren]-4-amine

N-([1,1'-biphenyl]-2-yl)-N-([1,1'-biphenyl]-4-yl)-9,9'-spirobi[fluoren]-4-amine · CAS 1450933-64-8