CAS 22840-91-1 appears in our catalog under these names: cis-Dichlorobis(dimethyl sulfoxide)platinum(II) 98%, CIS-DICHLOROBIS(DIMETHYL SULFOXIDE)PLAT&, cis-Dichlorobis(dimethyl sulfoxide)platinum(II), 97%, 97%. Offered by: Ambeed, Sigma-Aldrich, Chemat. Available pack sizes: 100mg, 250mg, 1g.