CAS 1116-22-9 appears in our catalog under these names: Glutamic Acid Impurity 1, gamma-L-Glutamyl L-Glutamic Acid, >95% (HPLC), H–Glu(Glu–OH)–OH, H-Glu(Glu-OH)-OH, gamma-L-Glutamyl-L-glutamic acid, 98%. Offered by: Chemat Brand, TRC, GLPBio, Biosynth, Thermo Scientific (Acros). Available pack sizes: on request, 100mg, 10mg, 50mg, 1g, 250mg, 500mg, 10 mg.