5-phenylethyl-imidazolidine-2,4-dione

(2-溴乙基)苯

1-{[(2E)-4-oxo-4-phenylbut-2-enoyl]oxy}pyrrolidine-2,5-dione

(2R,5R)-2-t-butyl-1-t-butyloxycarbonyl-3-methyl-5-(2-phenylethyl)-4-imidazolidinone

DL-2-amino-4-phenylbutyramide