CAS 1579983-04-2 appears in our catalog under these names: (2'–(Di–p–tolylamino)–(1,1'–biphenyl)–2–yl)diphenylphosphine oxide, (2'-(Di-p-tolylamino)-[1,1'-biphenyl]-2-yl)diphenylphosphine oxide, 98%, 2'-(Diphenylphosphinyl)-N,N-bis(4-methylphenyl)-1,1'-Biphenyl]-2-amine, 99%, Poly(9,9-dioctylfluorenyl-2,7-diyl) end capped with N,N-bis(4-methylphenyl)aniline. Offered by: GLPBio, Chemat Brand, Lumtec. Available pack sizes: 1g, on request, 2g.