CAS 2144777-77-3 appears in our catalog under these names: Azido-PEG5-CH2CO2-NHS, Azido–PEG5–CH2CO2–NHS, 2,5-Dioxopyrrolidin-1-yl 17-azido-3,6,9,12,15-pentaoxaheptadecanoate, 97%, 97%, Azido-PEG5-CH2CO2-NHS, 97.0%, Azido-PEG5-CH2CO2-NHS, 97%. Offered by: TargetMol, GLPBio, Chemat, MedChemExpress, Fluorochem. Available pack sizes: 2mg, 5mg, 10mg, 250mg, 500mg, 100mg, 250 mg, 100 mg.