CAS 118591-58-5 appears in our catalog under these names: Tos–PEG2–OH, Tos-PEG2-OH 98%, Ethanol, 2-(2-hydroxyethoxy)-, 1-(4-Methylbenzenesulfonate), 98%, 98%, Tos-PEG2-OH, 95.74%, 2-(2-Hydroxyethoxy)ethyl 4-methylbenzenesulfonate, 95%. Offered by: GLPBio, Ambeed, Chemat, MedChemExpress, Fluorochem. Available pack sizes: 250mg, 10g, 100mg, 1g, 5g, 500mg, 25g, 50g.