CAS 983-80-2 appears in our catalog under these names: cis–1,2–Bis(diphenylphosphino)ethylene, cis-1,2-Bis(diphenylphosphino)ethylene, 97% , (Z)-1,2-Bis(diphenylphosphino)ethene 97%, CIS-1,2-BIS(DIPHENYLPHOSPHINO)ETHYLENE,, cis-1,2-Bis(diphenylphosphino)ethylene, ≥97%, ≥97%. Offered by: GLPBio, Thermo Scientific (Alfa Aesar), Ambeed, Sigma-Aldrich, Chemat. Available pack sizes: 1g, 250mg, 5g, 100mg, 50mg.