CAS 1233407-28-7 appears in our catalog under these names: Bis-4-(N-carbazolyl)phenyl)phenylphosphine oxide, 99%, Bis(4-(9H-carbazol-9-yl)phenyl)(phenyl)phosphine oxide, 95-<97%, Poly((9,9-dioctyl-2,7-divinylenefluorenylene)-alt-(1,4-phenylene)), BCPO, 9,9'-((Phenylphosphinediyl)bis(4,1-phenylene))bis(9H-carbazole), 98%, 98%. Offered by: Lumtec, Hoffman Fine Chemicals, GLPBio, Chemat. Available pack sizes: 0.5g, 1g, 2,5g, 5g, 10g, 25g, 50g, On request.