CAS 4645-32-3 appears in our catalog under these names: Dimethyl vinylphosphonate 97% mix TBC as stabilizer, DIMETHYL VINYLPHOSPHONATE, >=95 % GC, Vinylphosphonic acid dimethyl ester, 97%, 97%, Dimethyl vinylphosphonate, 97%. Offered by: Ambeed, Sigma-Aldrich, Chemat, Fluorochem. Available pack sizes: 5g, 25g, 100g, 5ML, 10g, 500g.