Chemical identity

Naproxen EP Impurity F / Naproxen Ethyl Ester

CAS 31220-35-6 · C16H18O3

01Identity

Identifiers and names for this exact compound. Empty fields are left unassigned.

Lazychem IDLC-23114
PubChem CID711615
NameNaproxen EP Impurity F / Naproxen Ethyl Ester
CAS RN31220-35-6
Molecular formulaC16H18O3
Molecular weight258.31 g/mol
IUPAC nameEthyl (2S)-2-(6-methoxynaphthalen-2-yl)propanoate
InChIKeyURNAYRDBUUZOIU-NSHDSACASA-N

02Structure identifiers

2D structurePubChem CID 711615
Two-dimensional chemical structure of Naproxen EP Impurity F / Naproxen Ethyl Ester, CAS 31220-35-6
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 2 rings, includes aromatic atoms, includes aliphatic carbon, has 1 defined stereocentre. These statements are calculated from the published structure string.

Defined stereocentres1
Unassigned stereocentres0
Ring count2
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESCCOC(=O)[C@@H](C)C1=CC2=C(C=C1)C=C(C=C2)OC
InChINot listed
Formula from structureC16H18O3
Molecular weight from structure258.31 g/mol

03Stereochemistry

The published structure contains 1 defined and 0 unassigned tetrahedral stereocentre. The exact wedge and dash depiction is shown above.

Defined centres1Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 2Before symmetry reduction

Published same-connectivity configurations

1 record

These records have the same connectivity, molecular formula and protonation layer, but a different complete InChIKey stereochemical layer. Only separately structure-linked records are shown.

No additional structure-linked configuration with the same connectivity is currently present in the LazyChem dataset.

Scope: The mathematical 2^n value is only an upper bound. Symmetry and other stereogenic elements can change the number of distinct stereoisomers. A hypothetical configuration is not published as a compound record without a verified structure identity.

04India status for this compound

These results apply only to this exact compound name and CAS number. Confirm the current official instruments before making a regulatory decision.

NDPS / RCSNO EXACT MATCH FOUNDCAS 31220-35-6 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 31220-35-6 has no exact match in the reviewed SCOMET list.
Review date2026-08-01Recheck the current official instruments for the material, concentration, activity and date in question.

05Names and relationships

Associated parent compound

Naproxen

View API and impurity family

Other names

  • Naproxen EP Impurity F
  • Naproxen Ethyl Ester
  • 31220-35-6
  • ethyl (2S)-2-(6-methoxynaphthalen-2-yl)propanoate
  • (+)-(S)-Naproxen Ethyl Ester
  • UNII-978RJD689Y
  • Naproxen impurity F [EP]
  • Naproxen sodium impurity F [EP]
  • 978RJD689Y
  • DTXSID20185146
  • 2-Naphthaleneacetic acid, 6-methoxy-alpha-methyl-, ethyl ester, (alphaS)-
  • NAPROXEN IMPURITY F [EP IMPURITY]

Related records from the same parent family

06Documented history

Dated discovery, occurrence, use and issue claims are published only when a suitable primary or government source is available.

No dated history available

No verified discovery, first report, occurrence, use or issue event is currently available for this identity.

07Sources