| abstract |
The present invention relates to the use of a halogenated cyanocinnamic acid derivative of the general formula: where R is independently selected from among F, Cl, and Br, n = 3, 4, or 5, R' is selected from among COOH, CONH 2 , SO 3 H, and COOR", and R" = C 1 -C 5 alkyl; and/or of 4-brom-α-cyanocinnamic acid and/or of α-cyano-2,4-dichlorocinnamic acid in a matrix for MALDI mass spectrometry of an analyte. |