... ,4',4''-Tri(9-carbazoyl)triphenylamine CAS: 139092-78-7 Formula: C54H36N4 M.W.: 740.89 TCTA4,4',4''-Tri(9-carbazoyl)triphenylamineCAS ... advantages of high quantum efficiency, high brightness, high purity (99.9%), long lifetimes, excellent film-forming, good semiconductor properties, and good ... relations with domestic and abroad clients. 4,4',4''-Tri(9-carbazoyl)triphenylamine, TCTA, 139092-78 ...