CAS 462100-05-6 appears in our catalog under these names: Cbz-NH-PEG3-CH2COOH/ 98.01% (existing batch purity), Cbz–NH–PEG3–CH2COOH, Z-NH-PEG3-CH2COOH, Cbz-NH-PEG3-CH2COOH 97%, 5,8,11-Trioxa-2-azatridecanedioic acid, 1-(phenylmethyl) ester, 97%, 97%. Offered by: TargetMol, GLPBio, Biosynth, Ambeed, Chemat. Available pack sizes: 50mg, 250mg, 500mg, 1000mg, 2000mg, 100mg, 1g, 5g.