CAS 217180-81-9 appears in our catalog under these names: Azido–PEG5–CH2CO2H, 17-Azido-3,6,9,12,15-pentaoxaheptadecanoic acid, Azido-PEG5-CH2CO2H 95%, N3-PEG5-CH2COOH, 95%, 95%, Azido-PEG5-CH2CO2H, 98.88%. Offered by: GLPBio, Biosynth, Ambeed, Chemat, MedChemExpress. Available pack sizes: 100mg, 25mg, 50mg, 5g, 2g, 250mg, 1g, 500mg.