CAS 1188301-72-5 appears in our catalog under these names: 4,5-Dibromo-2-tert-butyl-1h-imidazole, 95%, 4,5-Dibromo-2-(tert-butyl)-1H-imidazole, 95%, 95%, 4,5-Dibromo-2-(tert-butyl)-1H-imidazole, 95%. Offered by: Combi-blocks, Chemat, Ambeed. Available pack sizes: 250mg, 1g, 100mg.