N-Acetyl-DL-phenylalanine 4-nitrophenyl ester;4-nitrophenyl N-acetyl-3-phenyl-DL-alaninate;D-N-acetylphenylalanine p-nitrophenyl ester;AC-DL-PHENYLALANINE-ONP;N-acetyl-D-phenylalanine 4-nitrophenyl ester;Ac-D-Phe-ONP;Phe-NPE;N-ACETYL-DL-PHENYLALANINE P-NITROPHENYL ESTER;ACETYL-DL-PHENYLALANINE 4-NITROPHENYL ESTER;p-nitrophenyl N-acetyl-D-phenylalanate;p-nitrophenyl N-acetyl-D-phenylalaninate;N-Acetyl-D-phenylalanin-p-nitrophenylester