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Molecular weight (MW) and optimized instrument settings for LC/MS/MS measurement.
| Compound | MW | Transition (m/z) |
Polarity | DP | CE | CXP | |
|---|---|---|---|---|---|---|---|
| Precursor | Product | ||||||
| Caffeine | 194 | 195.1 | 138.0 | positive | 45.0 | 23.0 | 4.0 |
| EGCG | 458 | 457 | 168.9 | negative | −255.0 | −24.0 | −4.0 |
| EGC | 306 | 305.1 | 161.1 | negative | −45.0 | −18.0 | −4.0 |
| Gallic acid | 170 | 168.9 | 125.1 | negative | −25.0 | −24.0 | −2.0 |
DP; declustering potential, CE; collision energy, CXP; collision cell exit potential.
