Chemical identity

Naproxen EP Impurity B / (S)-5-Chloro Naproxen

CAS 89617-86-7 · C14H13ClO3

01Identity

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

Lazychem IDLC-23110
PubChem CID13075209
NameNaproxen EP Impurity B / (S)-5-Chloro Naproxen
CAS RN89617-86-7
Molecular formulaC14H13ClO3
Molecular weight264.7 g/mol
IUPAC name(2S)-2-(5-Chloro-6-methoxynaphthalen-2-yl)propanoic acid
InChIKeyRVVAYDHIVLCPBC-QMMMGPOBSA-N

02Structure identifiers

2D structurePubChem CID 13075209
Two-dimensional chemical structure of Naproxen EP Impurity B / (S)-5-Chloro Naproxen, CAS 89617-86-7
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, contains at least one halogen atom. These statements are calculated from the published structure string.

Defined stereocentres1
Unassigned stereocentres0
Ring count2
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESC[C@@H](C1=CC2=C(C=C1)C(=C(C=C2)OC)Cl)C(=O)O
InChINot listed
Formula from structureC14H13ClO3
Molecular weight from structure264.7 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

2 records

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.

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 89617-86-7 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 89617-86-7 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 B
  • (S)-5-Chloro Naproxen
  • 5-Chloronaproxen, (S)-
  • 89617-86-7
  • (2S)-2-(5-Chloro-6-methoxynaphthalen-2-yl)propanoic acid
  • 5-Chloro naproxen, (+)-
  • Naproxen impurity B [EP]
  • UNII-R60QH2454J
  • Naproxen sodium impurity B [EP]
  • R60QH2454J
  • NAPROXEN IMPURITY B [EP IMPURITY]
  • 2-Naphthaleneacetic acid, 5-chloro-6-methoxy-alpha-methyl-, (alphaS)-

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