CAS 4720-66-5 appears in our catalog under these names: 1,2-Bis(1,3-benzodioxol-5-yl)ethane-1,2-dione, 95%, 1,2-Bis(benzo(d)(1,3)dioxol-5-yl)ethane-1,2-dione, 97%, 1,2-Bis(Benzo[D][1,3]Dioxol-5-Yl)Ethane-1,2-Dione, 95%. Offered by: Combi-blocks, AmBeed, Chemat, BLDpharm, Fluorochem. Available pack sizes: 1g, 5g, 100mg, 250mg.