CAS 63974-15-2 appears in our catalog under these names: 3-Amino-3-(4-biphenylyl)propionic Acid, H-β-DL-Phe(4-Ph)-OH 97%, 3-([1,1'-Biphenyl]-4-yl)-3-aminopropanoic acid, 97%, 97%, 3-Amino-3-(4-phenylphenyl)propanoic acid, 95%. Offered by: Biosynth, Ambeed, Chemat, Fluorochem. Available pack sizes: 2,5g, 250mg, 100mg, 1g.