CAS 23420-32-8 appears in our catalog under these names: Boc-Phe-Pro-OH, 97%, (S)-1-((S)-2-((tert-Butoxycarbonyl)amino)-3-phenylpropanoyl)pyrrolidine-2-carboxylic acid, 97%, Boc–Phe–Pro–OH, Boc-Phe-Pro-OH, (S)-1-((S)-2-((tert-Butoxycarbonyl)amino)-3-phenylpropanoyl)pyrrolidine-2-carboxylic acid, 97%, 97%. Offered by: Combi-blocks, AmBeed, GLPBio, Biosynth, Chemat. Available pack sizes: 1g, 10g, 25g, 5g, 100g, 2g.