Table 2 Optimized MS parameters of the LC-MS/MS method related to the analyte or to the IS. The first transition of the product ion was chosen for the quantification and the other for the confirmation of the compound. DP declustering potential; EP entrance potential; CE collision energy; CXP collision cell exit potential.
Compound | Precursor ion (m/z) | Product ion (m/z) | Dwell time (ms) | DP (V) | EP (V) | CE (V) | CXP (V) |
|---|---|---|---|---|---|---|---|
Cysteamine | 77.900 | 61.000 | 200 | 20.000 | 7.900 | 16.000 | 10.000 |
77.900 | 35.000 | 200 | 20.000 | 7.900 | 31.000 | 16.000 | |
77.900 | 27.000 | 200 | 20.000 | 7.900 | 36.000 | 12.000 | |
D6-cystine | 359.300 | 131.300 | 100 | 25.000 | 8.000 | 20.000 | 9.000 |
359.300 | 211.300 | 100 | 20.000 | 8.000 | 20.000 | 9.000 |