Are there alternatives to 3-Amino-3-phenylpropanoic acid (CAS: 614-19-7) in synthesis?

Several alternatives can be used in the synthesis of 3-Amino-3-phenylpropanoic acid (CAS: 614-19-7). For example, 3-Amino-3-phenylpropionic acid methyl ester can be used as a precursor. Other alternatives include using different amino acids or modifying the phenyl group, such as using 4-aminophenylacetic acid. These alternatives offer flexibility in synthesis methods and can be more readily available or cost-effective.