CAS 873297-20-2 appears in our catalog under these names: [1,3-Bis[2,6-bis(1-methylethyl)phenyl]-2-imidazolidinylidene]chlorosilver, (1,3-bis(2,6-Diisopropylphenyl)imidazolidin-2-ylidene)silver(III) chloride, 98%. Offered by: Chemat, Fluorochem. Available pack sizes: 100mg, 250mg.