Peak purity
Evidence from a photodiode-array or mass detector that the spectrum is constant across a peak, indicating no co-eluting species with a different chromophore. Silent on diastereomers.
Related terms
- Diastereomer
- A stereoisomer arising from inversion at one chiral centre. Same formula, same mass, same UV spectrum, often much less active. The impurity no mass spectrum finds.
see also Epimerisation · Racemisation
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 22 glossary terms beginning with P