---
title: "Diastereomer: research glossary | Sable Peptides"
description: "Diastereomers are stereoisomers that are not mirror images of each other, arising when a molecule has two or more stereocentres and some but not all differ"
canonical: https://www.sablepeptides.co.uk/glossary/diastereomer
publisher: Sable Peptides Limited (UK company 17488610)
note: Research use only. Not for human or veterinary use.
---

Glossary

# Diastereomer

Diastereomers are stereoisomers that are not mirror images of each other, arising when a molecule has two or more stereocentres and some but not all differ in configuration. A peptide in which one residue has racemised is a diastereomer of the intended peptide and may be separable by HPLC.

Source: [en.wikipedia.org](https://en.wikipedia.org/wiki/Diastereomer)

## Related terms

-   [Peptide](/glossary/peptide)
-   [Residue](/glossary/residue)

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