CAS 1325559-19-0 appears in our catalog under these names: MEFENAMIC ACID-(BENZOIC RING-<H/13>C<I/6, Mefenamic acid-13C6, 13C6-Mefenamic acid, Concentration: 100 µg/ml Solvent: Acetonitrile, 13C6-Mefenamic acid. Offered by: Sigma-Aldrich, MedChemExpress, HPC Standards. Available pack sizes: 10MG, 5mg, 1mg, 1x1ml, 1x10mg.