METHOD OF DETECTION OF AMINO ACID SEQUENCE AND/OR IDENTIFICATION OF PEPTIDES AND PROTEINS, BY USE OF A NEW DERIVATIZATION REAGENT AND SYNTHESIS OF 5-FORMYL-BENZENE-1,3-DISULPHONICACID AS DERIVATIZATION REAGENT

摘要

Present invention refers to a novel and improved method of derivatization and detection of amino acid sequence and/or identification of proteins, peptides by a new derivatization compound. Precisely, the method discloses a novel approach to derivatization of peptides or proteins by compounds comprising two or more sulfonyl groups and analysis of derivatized analytes in negative mode of operation of mass spectrometer. This method allows unambiguous analysis of amino acid sequence of long-chain peptides/proteins. Also, the invention discloses a novel synthesis procedure of 5-formyl-benzene-l,3-disulphonic acid as derivatization compound.