CAS 19522-40-8 appears in our catalog under these names: (R)–4，5–Diamino–5–oxopentanoic acid, H–D–Glu–NH₂, D-Glutamic acid alpha-amide, H-D-IsoGln-OH 98%, D-Isoglutamine, 98%, 98%. Offered by: GLPBio, Biosynth, Ambeed, Chemat, Fluorochem. Available pack sizes: 250mg, 1g, 5g, 1000mg, 100mg.