CAS 40372-72-3 appears in our catalog under these names: Bis(3–(triethoxysilyl)propyl) tetrasulfide, Bis(3-(triethoxysilyl)propyl)tetrasulfide, Bis[3-(triethoxysilyl)propyl]tetrasulfide, 95%, BIS(3-(TRIETHOXYSILYL)PROPYL) TETRA-SULF, Bis [3-(triethoxysilyl )propyl ] tetrasulphide, 90%+. Offered by: GLPBio, Biosynth, Combi-blocks, Sigma-Aldrich, Fluorochem. Available pack sizes: 100ml, 500ml, 100g, 250g, 500g, 5g, 25g, 50ML.