A-cyano-4-hydroxycinnamic add

Figure 6.1. MALDI mass spectrum recorded in a-cyano-4-hydroxycinnamic add.

FIGURE 3.4 An example of the severe ion suppression effect on the tissue surface. A peptide solution (0.5 pL of 100 nM ACTH) was spotted on both ITO glass slide smface and brain-homogenate section. After the spraying of matrix solution (10 mg/mL a-cyano-4-hydroxycinnamic add [a-CHCA] 50% acetonitrile, 0.1% TFA), the spotted peptide was visuaUzed by IMS. 

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