CAS 1260092-43-0 appears in our catalog under these names: Cbz-NH-PEG1-CH2COOH/ 99.26% (existing batch purity), Cbz–NH–PEG1–CH2COOH, Z-O1Pen-OH, Cbz-NH-PEG1-CH2COOH 95%, 2-(2-(((Benzyloxy)carbonyl)amino)ethoxy)acetic acid, 98%, 98%. Offered by: TargetMol, GLPBio, Iris Biotech, Ambeed, Chemat. Available pack sizes: 100mg, 250mg, 500mg, 1g, 5g, 25g, 10g, 50g.