CAS 462100-06-7 appears in our catalog under these names: Boc-NH-PEG3-CH2COOH/ min. 98%, Boc–NH–PEG3–CH2COOH, 2,2-Dimethyl-4-oxo-3,8,11,14-tetraoxa-5-azahexadecan-16-oic acid, Boc-NH-PEG3-CH2COOH 97%, T-BOC-N-AMIDO-PEG3-CH2CO2H. Offered by: TargetMol, GLPBio, Biosynth, Ambeed, Sigma-Aldrich. Available pack sizes: 50mg, 100mg, 500mg, 25g, 10g, 250mg, 1g, 5g.