CAS 1839590-23-6 appears in our catalog under these names: 1,1'-Bis((11aS)-10,11,12,13-tetrahydro-4H-diindeno(7,1-cd:1',7'-ef)phosphocin-5(6H)-yl)ferrocene, 95%, (S,S)-f-SpiroPhos. Offered by: AmBeed, TRC. Available pack sizes: 1g, 50mg, 250mg, 100mg, 5mg.