CAS 1672-91-9 appears in our catalog under these names: 4-Amino-N-(5-chloropyrazin-2-yl)benzenesulfonamide 95%, Sulfachlorpyrazine, Sulfachlorpyrazine, Concentration: 100 µg/ml Solvent: Acetonitrile. Offered by: Ambeed, HPC Standards. Available pack sizes: 100mg, 250mg, 1g, 5g, 1x10mg, 1x1ml.