CAS 518044-49-0 appears in our catalog under these names: Hydroxy–PEG3–acid, Hydroxy-PEG3-acid 95%, 3-[2-[2-(2-hydroxyethoxy)ethoxy]ethoxy]propanoic acid, 95%, 95%, Hydroxy-PEG3-acid, 99.34%, 3-[2-[2-(2-Hydroxyethoxy)ethoxy]ethoxy]propanoic acid, 95%. Offered by: GLPBio, Ambeed, Chemat, MedChemExpress, Fluorochem. Available pack sizes: 250mg, 500mg, 100mg, 1g, 5g, 10g, 5 g, 250 mg.