---
title: "Circular dichroism: research glossary | Sable Peptides"
description: "Circular dichroism (CD) spectroscopy measures the difference in absorption of left- and right-circularly polarised light by chiral molecules. In the far-UV"
canonical: https://www.sablepeptides.co.uk/glossary/circular-dichroism
publisher: Sable Peptides Limited (UK company 17488610)
note: Research use only. Not for human or veterinary use.
---

Glossary

# Circular dichroism

Circular dichroism (CD) spectroscopy measures the difference in absorption of left- and right-circularly polarised light by chiral molecules. In the far-UV region, peptide backbone conformations give characteristic spectra, allowing estimation of alpha-helix, beta-sheet and random coil content under different solution conditions.

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

## Related terms

-   [Peptide](/glossary/peptide)

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