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Official EU label nameGlossary entry 16140

MELATONIN

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
2

Resolved substance identity

CAS:73-31-4
EC:200-797-7
Ingredient index records:
MELATONIN
Cosmetic functions: ANTIOXIDANT

N-(2-(5-Methoxyindol-3-yl)ethyl)acetamide

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1 matched or reported name
MELATONIN

Regulatory evidence across markets

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

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.

Check the markets and their sourcesSearch every market for this name

Chemical identity and properties

PubChem 2D chemical structure for CAS 73-31-4
CAS 73-31-4PubChem CID 896

Melatonin

Melatonin is a member of the class of acetamides that is acetamide in which one of the hydrogens attached to the nitrogen atom is replaced by a 2-(5-methoxy-1H-indol-3-yl)ethyl group. It is a hormone secreted by the pineal gland in humans. It has a role as a geroprotector, a hormone, a central nervous system depressant, an anticonvulsant, a radical scavenger, an immunological adjuvant, a mouse metabolite and a human metabolite. It is a member of acetamides and a member of tryptamines. It is functionally related to a tryptamine. — ChEBI

IUPAC name
N-[2-(5-methoxy-1H-indol-3-yl)ethyl]acetamide
Molecular formula
C13H16N2O2
Molecular weight
232.28 g/mol
Exact mass
232.121177757 Da
XLogP3
0.8
Topological polar surface area
54.1 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
2
Covalent units
1
Defined stereocentres
0

Also known as

MelatonineN-Acetyl-5-methoxytryptamineCircadin5-Methoxy-N-acetyltryptamineMelatolN-(2-(5-Methoxy-1H-indol-3-yl)ethyl)acetamideMelovineMelapure
16 more reported names
Acetamide, N-[2-(5-methoxy-1H-indol-3-yl)ethyl]-N-[2-(5-methoxyindol-3-yl)ethyl]acetamideN-acetyl-5-methoxy-tryptamineN-(2-(5-Methoxyindol-3-yl)ethyl)acetamideNSC 113928Acetamide, N-(2-(5-methoxyindol-3-yl)ethyl)-JL5DK93RCLAcetamide, N-(2-(5-methoxy-1H-indol-3-yl)ethyl)-NSC-564235-methoxy n-acetyl-tryptamineNSC-113928J5.258BBCI-049Acetamide, N-[2-(5-methoxyindol-3-yl)ethyl]-CHEBI:16796N-[2-(5-Methoxy-1H-indol-3-yl)ethyl)acetamide
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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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