CAS 2172820-09-4 appears in our catalog under these names: (S,R,S)-AHPC-PEG2-acid, (S,R,S)–AHPC–PEG2–acid, (S,R,S)-AHPC-PEG2-acid 98%, VH 032 AMIDE-PEG2-ACID, (S,R,S)-AHPC-PEG2-acid, 98%, 98%. Offered by: TargetMol, GLPBio, Ambeed, Sigma-Aldrich, Chemat. Available pack sizes: 25mg, 100mg, 250mg, 5g, 50mg, 1g, 250 mg, 5 mg.