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Official EU label nameGlossary entry 9723

ECTOIN

This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.

Global evidence snapshot

The resolved identity has matching regulatory evidence in 0 of 13 indexed market datasets: 0 country records and 0 EU Annex records. Every result and evidence gap is listed below.

0 markets with evidence
Markets checked
13
Markets with evidence
0
Evidence gaps
13
Resolved identifiers
1

Resolved substance identity

CAS:96702-03-3
Ingredient index records:
ECTOIN
Cosmetic functions: SKIN CONDITIONING

4-Pyrimidinecarboxylic Acid, 1,4,5,6,-Tetrahydro-2-Methyl-, (4S)-

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1 matched or reported name
ECTOIN

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name ECTOIN.

That is a statement about this inventory, not about the law: no imported rule is not evidence that a substance is permitted. A rule may exist under a different name, under a CAS or EC number this glossary entry does not carry, or in a dataset not yet imported.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 96702-03-3
CAS 96702-03-3PubChem CID 126041

Ectoine

Ectoine is a carboxamidine heterocycle obtained by formal condensation of (2S)-2,4-diaminobutanoic acid with acetic acid. It has a role as an osmolyte. It is a monocarboxylic acid, a carboxamidine and a member of 1,4,5,6-tetrahydropyrimidines. It is a conjugate acid of an ectoinate. It is a tautomer of an ectoine zwitterion. — ChEBI

IUPAC name
(6S)-2-methyl-1,4,5,6-tetrahydropyrimidine-6-carboxylic acid
Molecular formula
C6H10N2O2
Molecular weight
142.16 g/mol
Exact mass
142.074227566 Da
XLogP3
-0.8
Topological polar surface area
61.7 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
3
Covalent units
1
Defined stereocentres
1

Also known as

ectoin7GXZ3858RY(4S)-2-methyl-1,4,5,6-tetrahydropyrimidine-4-carboxylic acidCHEBI:27592NSC-6146161,4,5,6-Tetrahydro-2-methyl-4-pyrimidinecarboxylic acid(4S)-3,4,5,6-Tetrahydro-2-methyl-4-pyrimidinecarboxylic acid4-Pyrimidinecarboxylic acid, 1,4,5,6-tetrahydro-2-methyl-, (+)-
16 more reported names
(4S)-2-methyl-1,4,5,6-tetrahydropyrimidine-4-carboxylate(6S)-2-methyl-1,4,5,6-tetrahydropyrimidin-3-ium-6-carboxylateRefChem:5905672-methyl-3,4,5,6-tetrahydropyrimidine-4-carboxylic acidL-Ectoine(S)-2-Methyl-3,4,5,6-tetrahydropyrimidine-4-carboxylic acid(S)-2-Methyl-1,4,5,6-tetrahydropyrimidine-4-carboxylic acidUS9138393, Ectoine4-Pyrimidinecarboxylicacid, 3,4,5,6-tetrahydro-2-methyl-, (4S)-(S)-2-Methyl- 1,4,5,6-tetrahydropyrimidine-4-carboxylic acid(+)-1,4,5,6-tetrahydro-2-methyl-4-pyrimidinecarboxylic acidUNII-7GXZ3858RY(S)-1,4,5,6-Tetrahydro-2-methyl-4-pyrimidincarbonsureEctoine?4CSEctoine (Standard)
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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.

Additional authoritative substance research

Each link searches that source for this identity. A link is a research route, not a claim that the source holds an exact record. What each source is, and its legal weight

Cosmetic Ingredient Review safety assessmentsFDA Global Substance Registration SystemILO/WHO International Chemical Safety CardsJapan NITE-CHRIPNIOSH Pocket Guide to Chemical HazardsOECD eChemPortalUS EPA CompTox CTX APIs

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Official source and scope

Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.

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