Naproxen

CAS Registry Number®

22204-53-1

CAS Name

Naproxen

Molecular Formula

C14H14O3

Molecular Mass

230.26

Cite this Page

Naproxen.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/ChemicalDetail.aspx?ref=22204-53-1 (retrieved 2025-07-02) (CAS RN: 22204-53-1).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Melting Point (1)

    152-154 °C

  • Density (2)

    1.25 g/cm³ (amorphous)

Source(s)

Other Names and Identifiers

InChI

InChI=1S/C14H14O3/c1-9(14(15)16)10-3-4-12-8-13(17-2)6-5-11(12)7-10/h3-9H,1-2H3,(H,15,16)/t9-/m0/s1

InChIKey

InChIKey=CMWTZPSULFXXJA-VIFPVBQESA-N

SMILES

[C@H](C(O)=O)(C)C1=CC2=C(C=C(OC)C=C2)C=C1

Canonical SMILES

O=C(O)C(C1=CC=C2C=C(OC)C=CC2=C1)C

Other Names for this Substance

  • 2-Naphthaleneacetic acid, 6-methoxy-α-methyl-, (αS)-
  • 2-Naphthaleneacetic acid, 6-methoxy-α-methyl-, (+)-
  • 2-Naphthaleneacetic acid, 6-methoxy-α-methyl-, (S)-
  • (αS)-6-Methoxy-α-methyl-2-naphthaleneacetic acid
  • (+)-2-(6-Methoxy-2-naphthyl)propionic acid

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CAS INSIGHTSTM
Purple and red filaments produced by electrostatic discharge inside a plasma ball.