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CAS 22204-53-1

CAS 22204-53-1 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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.

Records for CAS 22204-53-1

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How CAS 22204-53-1 is used on this site

CAS 22204-53-1 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 22204-53-1 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.