CAS 1031262-71-1 appears in our catalog under these names: [1,3-BIs(2,4,6-trimethylphenyl)-2-imidazolidinylidene]dichloro[[2-(1-methylacetoxy)phenyl]methylene]ruthenium(II) 98%, GRUBBS CATALYST M51,UMICORE, GRUBBSCATALYSTM51,UMICORE, [1,3-BIs(2,4,6-trimethylphenyl)-2-imidazolidinylidene]dichloro[[2-(1-methylacetoxy)phenyl]methylene]ruthenium(II), 98%, 98%. Offered by: Ambeed, Sigma-Aldrich, Chemat. Available pack sizes: 50mg, 100mg, 250mg, 1g, 5g, 500MG.