Chemical identity

Zidovudine EP Impurity B / Zidovudine Related Compound B / 3′-Chloro-3′-deoxythymidine

CAS 25526-94-7 · C10H13ClN2O4

01Identity

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

Lazychem IDLC-31050
PubChem CID72249
NameZidovudine EP Impurity B / Zidovudine Related Compound B / 3′-Chloro-3′-deoxythymidine
CAS RN25526-94-7
Molecular formulaC10H13ClN2O4
Molecular weight260.67 g/mol
IUPAC name1-(3-Chloro-2,3-dideoxy-β-D-erythro-pentofuranosyl)-5-methylpyrimidine-2,4(1H,3H)-dione
InChIKeyKQVJDKGDGLWBQT-XLPZGREQSA-N

02Structure identifiers

2D structurePubChem CID 72249
Two-dimensional chemical structure of Zidovudine EP Impurity B / Zidovudine Related Compound B / 3′-Chloro-3′-deoxythymidine, CAS 25526-94-7
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 3 defined stereocentres, contains at least one halogen atom. These statements are calculated from the published structure string.

Defined stereocentres3
Unassigned stereocentres0
Ring count2
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESCC1=CN(C(=O)NC1=O)[C@H]2C[C@@H]([C@H](O2)CO)Cl
InChINot listed
Formula from structureC10H13ClN2O4
Molecular weight from structure260.67 g/mol

03Stereochemistry

The published structure contains 3 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres3Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 8Before 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 25526-94-7 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 25526-94-7 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

Zidovudine

View API and impurity family

Other names

  • Zidovudine EP Impurity B
  • Zidovudine Related Compound B / 3′-Chloro-3′-deoxythymidine
  • Thymidine, 3'-chloro-3'-deoxy-
  • 3'-Chloro-3'-deoxythymidine
  • UNII-8GQZ0LXH0C
  • 8GQZ0LXH0C
  • Zidovudine impurity B
  • DTXSID10180226
  • 3'-DESOXY-3'-CHLOROTHYMIDINE
  • ZIDOVUDINE IMPURITY B [WHO-IP]
  • ZIDOVUDINE IMPURITY B [EP IMPURITY]
  • 1-(3-Chloro-2,3-dideoxy-beta-D-erythro-pentofuranosyl)-5-methylpyrimidine-2,4(1H,3H)-dione

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