CAS 33040-12-9 appears in our catalog under these names: DIIODO(PENTAMETHYLCYCLOPENTADIENYL)IRID&, Diiodo(pentamethylcyclopentadienyl)iridium(III) dimer, Iridium 27.3 - 38.9 %, Iridium 27.3 - 38.9 %. Offered by: Sigma-Aldrich, Chemat. Available pack sizes: 1G, 250MG, 100mg, 500mg.