CAS 34123-57-4 appears in our catalog under these names: 1-(4-Isopropylphenyl)-3-methylurea, 1-(4-Isopropylphenly)-3-methylurea 100 µg/mL in Acetonitrile, Isoproturon-desmethyl, Isoproturon-desmethyl, Concentration: 100 µg/ml Solvent: Acetonitrile. Offered by: Dr. Ehrenstorfer, HPC Standards. Available pack sizes: 100mg, 1ml, 1x100mg, 1x1ml.