CAS 2055198-05-3 appears in our catalog under these names: Sulfo dbco-peg4-amine, 95%, Sulfo DBCO–PEG4–amine, DBCO-Sulfo-PEG(4)-NH2, Sulfo DBCO-PEG4-amine, 98.65%. Offered by: Combi-blocks, GLPBio, Iris Biotech, MedChemExpress. Available pack sizes: 100mg, 500mg, 10mg, 5mg, 25mg, 5 mg, 10 mg.