CAS 1442085-43-9 appears in our catalog under these names: Chloro–PEG2–Boc, [2-(2-Chloro-ethoxy)-ethoxy]-acetic acid tert-butyl ester, 97%, 97%, Chloro-PEG2-Boc, 97.0%, [2-(2-Chloro-ethoxy)-ethoxy]-acetic acid tert-butyl ester, 97%. Offered by: GLPBio, Chemat, MedChemExpress, Fluorochem. Available pack sizes: 100mg, 250mg, 1g, 5g, 5 g, 1 g, 100 mg, 250 mg.