CAS 67953-08-6 appears in our catalog under these names: L-Glutamic acid gamma-(p-nitroanilide) hydrochloride, 95%, GPNA (L-gama-Glutamyl-p-nitroanilide), GPNA hydrochloride/ 99.91% (existing batch purity), GPNA hydrochloride, L-GLUTAMIC ACID GAMMA-(P-NITROANILIDE) &. Offered by: Combi-blocks, Chemat Brand, TargetMol, GLPBio, Sigma-Aldrich. Available pack sizes: 250mg, 5g, 1g, 25g, on request, 10mg, 25mg, 50mg.