Media type: E-Article Title: Targeted LC–MS derivatization for aldehydes and carboxylic acids with a new derivatization agent 4-APEBA Contributor: Eggink, Mark; Wijtmans, Maikel; Kretschmer, Ansgar; Kool, Jeroen; Lingeman, Henk; de Esch, Iwan J. P.; Niessen, Wilfried M. A.; Irth, Hubertus imprint: Springer Science and Business Media LLC, 2010 Published in: Analytical and Bioanalytical Chemistry Language: English DOI: 10.1007/s00216-010-3575-1 ISSN: 1618-2642; 1618-2650 Keywords: Biochemistry ; Analytical Chemistry Origination: Footnote: