CAS 941-55-9 appears in our catalog under these names: 4-Methylbenzenesulfonyl azide - 11-15 % (w/w) in Toluene, P-TOLUENESULFONYL AZIDE SOLUTION, 11-15%, 4-Methylbenzenesulfonyl azide (30% w/w solution in toluene), 95%. Offered by: Biosynth, Sigma-Aldrich, Fluorochem. Available pack sizes: 10g, 5g, 25g, 50g, 100g.