CAS 18547-93-8 appears in our catalog under these names: 1,3-Bis(3-methacryloxypropyl)tetramethyldisiloxane, 95%, (1,1,3,3-Tetramethyldisiloxane-1,3-diyl)bis(propane-3,1-diyl) bis(2-methylacrylate) 97%, 2-Propenoic acid,2-methyl-, 1,1'-[(1,1,3,3-tetramethyl-1,3-disiloxanediyl)di-3,1-propanediyl]ester, 97%, 97%. Offered by: Combi-blocks, Ambeed, Chemat, Fluorochem. Available pack sizes: 10g, 5g, 1g, 25g, 250mg.