Table 2.
List of Catecholamines Detected from the Measurement of the Secreted Molecules from PC12 Cells Using LDIDD-MS
compound | theoretical m/z ([M + H]+) | observed m/z ([M + H]+) | mass error (ppm) | confirmation of identity |
---|---|---|---|---|
phenethylamine | 122.09697 | 122.09676 | 1.7 | MRM LC-MSb |
tyramine | 138.09188 | 138.09177 | 0.8 | MRM LC-MSb |
dopamine | 154.08680 | 154.08685 | 0.3 | no |
The identity of the detected compound was confirmed with multiple reaction monitoring (MRM) LC–MS (see the Supporting Information for further detail and MRM LC-MS data).