CAS 172960-62-2 appears in our catalog under these names: Metazachlor-ethane sulfonic acid (ESA), Metazachlor ESA, Concentration: 100 µg/ml Solvent: Acetonitrile, Metazachlor ESA. Offered by: Dr. Ehrenstorfer, HPC Standards. Available pack sizes: 10mg, 1x1ml, 1x10mg.