CAS 5523-19-3 appears in our catalog under these names: Boron trichloride methyl sulfide complex, BORON TRICHLORIDE-METHYL SULFIDE COMPLE&, Boron trichloride-methyl sulfide complex, 99%,RG, 99%,RG. Offered by: Biosynth, Sigma-Aldrich, Chemat. Available pack sizes: 50g, 100g, 25G, 1g, 5g.