biphenyl-4-yl-(4-bromo-phenyl)-(9,9-dimethyl-9h-fluoren-2-yl)-amine
name：biphenyl-4-yl-(4-bromo-phenyl)-(9,9-dimethyl-9h-fluoren-2-yl)-amine cas no.：1246562-40-2 purity：99.80%