Product:  N,N'-di-(1-naphthalenyl)-N,N'-diphenyl-[1,1':4',1'':4'',1'''-quaterphenyl]-4,4'''-diamine (4P-NPB)

CAS NO:  948552-24-7

Molecular formula:    C56H40N2

Structure formula: 

Purity:  99.5% (HPLC)