CAS 857891-82-8 appears in our catalog under these names: H2N-PEG(8)-N3, Azido–PEG8–amine, O-(2-Aminoethyl)-O'-(2-azidoethyl)heptaethylene glycol, Azido-PEG8-amine 97%, O-(2-AMINOETHYL)-O'-(2-AZIDOETHYL)HEPTAE. Offered by: Iris Biotech, GLPBio, Biosynth, Ambeed, Sigma-Aldrich. Available pack sizes: 1g, 5g, 100mg, 50mg, 250mg, 500mg, 1000mg, 250 mg.