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CAS 497-30-3

CAS 497-30-3 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 497-30-3
CAS 497-30-3PubChem CID 5351619

Ergothioneine

Ergothioneine is a L-histidine derivative that is Nalpha,Nalpha,Nalpha-trimethyl-L-histidine in which the hydrogen at position 2 on the imdazole ring is replaced by a mercapto group. A naturally occurring metabolite of histidine synthesized by bacteria and fungi with antioxidant properties. It is found ubiquitously in plants and animals and is present in many human foodstuffs. It has a role as an antioxidant, a chelator, a xenobiotic metabolite, a plant metabolite and a fungal metabolite. It is an amino-acid betaine, a sulfur-containing amino acid and a L-histidine derivative. It is a conjugate base of an ergothioneine(1+). It is a tautomer of an ergothioneine thione form. — ChEBI

IUPAC name
(2S)-3-(2-sulfanylidene-1,3-dihydroimidazol-4-yl)-2-(trimethylazaniumyl)propanoate
Molecular formula
C9H15N3O2S
Molecular weight
229.30 g/mol
Exact mass
229.08849790 Da
XLogP3
0.3
Topological polar surface area
96.3 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
3
Covalent units
1
Defined stereocentres
1

Also known as

L-ErgothioneineSympectothionErgothionineThioneinel-ThioneineThiasineThiolhistidine-betaineL(+)-Ergothioneine
16 more reported names
BDZ3DQM98WCHEBI:4828(2S)-3-(2-sulfanylidene-2,3-dihydro-1H-imidazol-4-yl)-2-(trimethylazaniumyl)propanoate1H-Imidazole-4-ethanaminium, alpha-carboxy-2,3-dihydro-N,N,N-trimethyl-2-thioxo-, inner salt, (S)-2 Thiol L histidine betaine(alphaS)-alpha-carboxy-2,3-dihydro-N,N,N-trimethyl-2-thioxo-1H-imidazole-4-ethanaminium inner saltNSC-71752-Thiol-L-histidine-betaineRefChem:5910765-((2S)-2-carboxy-2-(trimethylazaniumyl)ethyl)-1H-imidazole-2-thiolate207-843-5L-(+)-Ergothioneine(S)-3-(2-Thioxo-2,3-dihydro-1H-imidazol-4-yl)-2-(trimethylammonio)propanoateNSC 7175ergothioneine (thione form)Thioeine
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External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

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CAS 497-30-3 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

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