CAS 18891-13-9 appears in our catalog under these names: Hexanedioic acid, 1-ethyl 6-methyl ester, 95%+, 95%+, Lipoic acid impurity 1, 97.0%, 1-ETHYL 6-METHYL HEXANEDIOATE, 97%. Offered by: Chemat, MedChemExpress, Fluorochem. Available pack sizes: 100mg, 250mg, 1g, 25 mg, 50 mg, 100 mg.