CAS 940934-47-4 appears in our catalog under these names: 4,5-Bis(dicyclohexylphosphino)-9,9-dimethylxanthene, >97.0%(GC), Cy-Xantphos 97%, 4,5-Bis(dicyclohexylphosphino)-9,9-dimethyl-9H-xanthene, 97%, 97%, 4,5-Bis(dicyclohexylphosphino)-9,9-dimethyl-9H-xanthene, 95%. Offered by: TCI, Ambeed, Chemat, Fluorochem. Available pack sizes: 200mg, 1g, 250mg, 5g, 25g, 100g, 10g.