CAS 452072-27-4 appears in our catalog under these names: Sulfo–SPP, Sulfo-SPP, 2,5-DIOXO-1-(4-(PYRIDIN-2-YLDISULFANYL)PENTANOYLOXY)PYRROLIDINE-3-SULFONIC ACID, 97%, 97%, Sulfo-SPP, 97.14%. Offered by: GLPBio, Biosynth, Chemat, MedChemExpress. Available pack sizes: 100mg, 25mg, 50mg, 250mg, 500mg, 10mg, 5 mg, 10 mg.