CAS 2172820-07-2 appears in our catalog under these names: VH 032 amide-PEG1-acid, VH 032 amide–PEG1–acid, VH 032 amide-PEG1-acid 95%, (S,R,S)-AHPC-CO-PEG1-C2-ACID, 3-(3-(((S)-1-((2S,4R)-4-Hydroxy-2-((4-(4-methylthiazol-5-yl)benzyl)carbamoyl)pyrrolidin-1-yl)-3,3-dimethyl-1-oxobutan-2-yl)amino)-3-oxopropoxy)propanoic acid, 95%, 95%. Offered by: TargetMol, GLPBio, Ambeed, Sigma-Aldrich, Chemat. Available pack sizes: 25mg, 50mg, 100mg, 250mg, 1g, 5g, 25 mg, 5 mg.