(S)-(-)-2-异氰酰基戊二酸二乙酯

Z-GLU-GLY-OH

acetic acid-[(25R)-5α-spirosta-7,9(11)-dien-3β-yl ester

N-(N-benzyloxycarbonyl-α-L-glutamyl)-glycine ethyl ester

N-[N-(N-benzyloxycarbonyl-α-L-glutamyl)-glycyl]-glycine