Liquid chromatography-electrospray mass spectrometry of multicomponent peptide mixtures - Characterization of a mixture from the synthesis of the hormone goserelin
V. Sanz-nebot et al., Liquid chromatography-electrospray mass spectrometry of multicomponent peptide mixtures - Characterization of a mixture from the synthesis of the hormone goserelin, J CHROMAT A, 889(1-2), 2000, pp. 119-133
In order to separate and characterize the target peptide and the side-produ
ct peptide compounds of a synthesis mixture of the peptide hormone gosereli
n, liquid chromatography coupled to high-flow electrospray ionization mass
spectrometry (LC-ES-MS) has been used. Goserelin is an important drug with
recognized therapeutical application for palliative treatment of prostatic
and breast carcinomas. Stepwise solid-phase peptide synthesis commonly resu
lts in unwanted side-products associated with incomplete peptide chains. Co
nsequently, this procedure requires extensive purification and characteriza
tion of the final synthesis mixture. The method of linear solvation energy
relationships has been applied to optimize the proportion of organic modifi
er of the mobile phase used in the established LC method. On the other hand
, ES-MS has allowed rapid and reliable identification of the target peptide
and the other impurities present in the goserelin synthesis products. (C)
2000 Elsevier Science B.V. All rights reserved.