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Is Red HE-3B vegan?

Red HE-3B

Vegan

Red HE-3B, also known as Reactive Red 120, is a synthetic reactive dye widely used in textile dyeing. It is also employed as a ligand in dye-ligand affinity chromatography for protein purification, where it mimics substrates or cofactors to bind proteins with similar active sites.

Also known as Reactive Red 120
CAS number 61951-82-4
CI number CI 292775
Last reviewed 3 June 2026

Sources

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