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Official EU label nameGlossary entry 17225

NAPROXEN

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:22204-53-1
EC:244-838-7
Ingredient index records:
NAPROXEN
Cosmetic functions: SKIN CONDITIONING

(+)-(S)-6-Methoxy-a-Methyl-2-Naphthaleneacetic Acid

2 matched or reported names
NAPROXENNaproxen [USAN:INN:BAN:JAN]

Regulatory evidence across markets

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

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.

Chemical identity and properties

PubChem 2D chemical structure for CAS 22204-53-1
CAS 22204-53-1PubChem CID 156391

Naproxen

Naproxen is a methoxynaphthalene that is 2-methoxynaphthalene substituted by a carboxy ethyl group at position 6. Naproxen is a non-steroidal anti-inflammatory drug commonly used for the reduction of pain, fever, inflammation and stiffness caused by conditions such as osteoarthritis, kidney stones, rheumatoid arthritis, psoriatic arthritis, gout, ankylosing spondylitis, menstrual cramps, tendinitis, bursitis, and for the treatment of primary dysmenorrhea. It works by inhibiting both the COX-1 and COX-2 enzymes. It has a role as a non-steroidal anti-inflammatory drug, a non-narcotic analgesic, an antipyretic, a xenobiotic, a gout suppressant, a cyclooxygenase 2 inhibitor, a cyclooxygenase 1 inhibitor, an environmental contaminant and a drug allergen. It is a monocarboxylic acid and a methoxynaphthalene. It is a conjugate acid of a naproxen(1-). — ChEBI

IUPAC name
(2S)-2-(6-methoxynaphthalen-2-yl)propanoic acid
Molecular formula
C14H14O3
Molecular weight
230.26 g/mol
Exact mass
230.094294304 Da
XLogP3
3.3
Topological polar surface area
46.5 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
3
Covalent units
1
Defined stereocentres
1

Also known as

(S)-Naproxen(+)-NaproxenEquiproxenNaprosynNaproxene(S)-(+)-Naproxend-NaproxenNycopren
16 more reported names
NaixanEc-Naprosyn(+)-(S)-Naproxen(S)-(+)-2-(6-Methoxy-2-naphthyl)propionic acidLaraflexNaprosyneNaproxenoNaproxenumCalosenNapriusReuxenBonylNaxenAxerVeradolXenar
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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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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