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CAS 3081-61-6

CAS 3081-61-6 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 3081-61-6
CAS 3081-61-6PubChem CID 439378

L-Theanine

N(5)-ethyl-L-glutamine is a N5-alkylglutamine where the alkyl group is ethyl. It has been isolated from green tea. It has a role as a geroprotector, a neuroprotective agent and a plant metabolite. It is a tautomer of a N(5)-ethyl-L-glutamine zwitterion. — ChEBI

IUPAC name
(2S)-2-amino-5-(ethylamino)-5-oxopentanoic acid
Molecular formula
C7H14N2O3
Molecular weight
174.20 g/mol
Exact mass
174.10044231 Da
XLogP3
-3.6
Topological polar surface area
92.4 Ų
Hydrogen-bond donors
3
Hydrogen-bond acceptors
4
Covalent units
1
Defined stereocentres
1

Also known as

TheanineTheaninSuntheanine8021PR16QONSC-21308delta-glutamylethylamide(2S)-2-azaniumyl-5-(ethylamino)-5-oxopentanoateL-Glutamic acid-gamma-ethylamide
16 more reported names
RefChem:51690221-379-0N-Ethyl-L-glutamine(S)-2-Amino-5-(ethylamino)-5-oxopentanoic acidN5-Ethyl-L-glutamineL-gamma-GlutamylethylamideN(5)-ethyl-L-glutamineN-gamma-Ethyl-L-glutamineCCRIS 7326EINECS 221-379-0NSC 21308UNII-8021PR16QOHSDB 8166(+)-TheanineN?-Ethyl-L-glutamineH-Glu(NHEt)-OH
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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.

Records for CAS 3081-61-6

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How CAS 3081-61-6 is used on this site

CAS 3081-61-6 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.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 3081-61-6 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.