CAS 16522-52-4 appears in our catalog under these names: (2-Hydroxyphenyl)diphenylphosphine oxide, 95%, (2-Hydroxyphenyl)diphenylphosphine oxide, 98%, Phenol, 2-(diphenylphosphinyl)-, 95%+, 95%+. Offered by: Combi-blocks, AmBeed, Chemat. Available pack sizes: 1g, 250mg, 100mg, 50mg.