---
title: "Ninhydrin: research glossary | Sable Peptides"
description: "Ninhydrin is a chemical reagent that reacts with primary amines and amino acids to form a deep purple product known as Ruhemann's purple. It is used in the"
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publisher: Sable Peptides Limited (UK company 17488610)
note: Research use only. Not for human or veterinary use.
---

Glossary

# Ninhydrin

Ninhydrin is a chemical reagent that reacts with primary amines and amino acids to form a deep purple product known as Ruhemann's purple. It is used in the Kaiser test during peptide synthesis and as a post-column derivatisation reagent in classical amino acid analysis.

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

## Related terms

-   [Peptide](/glossary/peptide)
-   [Amino acid](/glossary/amino-acid)
-   [Amino acid analysis](/glossary/amino-acid-analysis)
-   [Kaiser test](/glossary/kaiser-test)

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