CAS 16874-06-9 appears in our catalog under these names: H-Glu(OtBu)-OtBu 97%, L-Glutamic acid di-tert-butyl ester, 98%, 98%, H-Glu(OtBu)-OtBu, (S)-DI-TERT-BUTYL 2-AMINOPENTANEDIOATE, 95%. Offered by: Ambeed, Chemat, MedChemExpress, Fluorochem. Available pack sizes: 100mg, 250mg, 1g, 5g, 25g, 10g, 50g, 100g.