CAS 1948273-09-3 appears in our catalog under these names: NH2–PEG2–CH2–Boc, NH2-PEG2-CH2-Boc, NH2-PEG2-CH2-Boc 98%, Acetic acid, 2-[3-(2-aminoethoxy)propoxy]-, 1,1-dimethylethyl ester, 98%, 98%, NH2-PEG2-CH2-Boc, 98.0%. Offered by: GLPBio, TargetMol, Ambeed, Chemat, MedChemExpress. Available pack sizes: 100mg, 250mg, 50mg, 1g, 5g, 100 mg, 250 mg.