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| adduct | Common adducts |
| contam | Contaminants in MS |
| E_iso | Element isotopes |
| formula | Get compound formula and structure |
| Iso_mass | Isotope labelled molecular mass |
| Iso_mz | Isotope labelled molecular mass |
| mass | molecular mass |
| mz | accurate ion mass |
| ppm | mass accuracy |
| what | search for m/z in from the idiom metabolomics database |