CAS 138028-00-9 appears in our catalog under these names: H–Ala–Pro–Arg–Thr–Pro–Gly–Gly–Arg–Arg–OH, H-Ala-Pro-Arg-Thr-Pro-Gly-Gly-Arg-Arg-OH, MBP MAPK Substrate, 99%, 99%, MBP MAPK Substrate, 99.58%. Offered by: GLPBio, Biosynth, Chemat, MedChemExpress. Available pack sizes: 1mg, 10mg, 5mg, 25mg, 10 mg, 5 mg.