CAS 17355-11-2 appears in our catalog under these names: (S)-2-((S)-2-Amino-3-(4-hydroxyphenyl)propanamido)-3-phenylpropanoic acid, 98%, 98%, H-Tyr-Phe-OH, H–Tyr–Phe–OH, H-Tyr-Phe-OH, 99.46%, H-Tyr-Phe-OH, 98%. Offered by: Chemat, TargetMol, GLPBio, MedChemExpress, Fluorochem. Available pack sizes: 100mg, 250mg, 1g, 25mg, 5g, 100 mg.