A purpose of the present invention is to provide a compound that has a functional group available for formation of a conjugate at its C-terminus and that has cytotoxicity. The present invention provides a peptide derivative represented by the formula below or a pharmaceutically acceptable salt thereof.
本发明的目的是提供一种化合物,该化合物的 C-末端具有可形成共轭物的官能团,并且具有细胞毒性。本发明提供了由下式代表的肽衍
生物或其药学上可接受的盐。