Isotope pattern
The set of peaks arising from natural isotopic variants of a molecule. Its spacing gives the charge state directly: 1/z daltons.
Related terms
- Monoisotopic mass
- The mass of the isotopologue in which every atom is its most abundant isotope. All theoretical masses on this site are monoisotopic.
- Average mass
- The abundance-weighted mean mass over the whole natural isotope distribution. What a low-resolution instrument reports. About 600 ppm above the monoisotopic mass for a peptide.
see also Average mass · Isotope pattern
see also Monoisotopic mass · Isotope pattern
Where this term appears
The glossary exists to make record pages readable without a chemistry degree. Every technical term on a report resolves here.
- Assay report records — the term appears in result tables, peak tables and provenance blocks
- Method references — where the measurement behind the term is defined
- All 13 glossary terms beginning with I