CAS 287174-32-7 appears in our catalog under these names: Hydroxy–PEG1–CH2–Boc, Hydroxy-PEG1-CH2CO2tBu, Hydroxy-PEG1-CH2-Boc 95%, tert-Butyl (2-hydroxyethoxy)acetate, 98%, 98%, Hydroxy-PEG1-CH2-Boc, 99.49%. Offered by: GLPBio, Biosynth, Ambeed, Chemat, MedChemExpress. Available pack sizes: 250mg, 5g, 2g, 10g, 100mg, 1g, 25g, 100g.