Chemical identity

Capecitabine EP Impurity F / Capecitabine Related Compound C

CAS 921769-65-5 · C16H20FN3O7

01Identity

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

Lazychem IDLC-09319
PubChem CID46781869
NameCapecitabine EP Impurity F / Capecitabine Related Compound C
CAS RN921769-65-5
Molecular formulaC16H20FN3O7
Molecular weight385.34 g/mol
IUPAC namePentyl [5-fluoro-1-[(3aR,4R,6R,6aR)-6-methyl-2-oxotetrahydrofuro[3,4-d][1,3]dioxol-4-yl]-2-oxo-1,2-dihydropyrimidin-4-yl]carbamate
InChIKeyHDKWBDGQTUQSTO-UHFFFAOYSA-N

02Structure identifiers

2D structurePubChem CID 46781869
Two-dimensional chemical structure of Capecitabine EP Impurity F / Capecitabine Related Compound C, CAS 921769-65-5
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 3 rings, includes aromatic atoms, includes aliphatic carbon. These statements are calculated from the published structure string.

Defined stereocentres0
Unassigned stereocentres1
Ring count3
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESCCC1=CN=C(C=C1)CCOC2=CC=C(C=C2)CC3(C(=O)NC(=O)S3)O
InChINot listed
Formula from structureC19H20N2O4S
Molecular weight from structure372.45 g/mol

03Stereochemistry

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

Defined centres0Structure assigned
Unassigned centres1Structure unspecified
Assignment statusUnassignedExact 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 921769-65-5 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 921769-65-5 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

Capecitabine

View API and impurity family

Other names

  • Capecitabine EP Impurity F
  • 2',3'-O-Carbonyl-5'-deoxy-5-fluoro-N4-(pentyloxycarbonyl)cytidine
  • Cytidine, 5'-deoxy-5-fluoro-N-((pentyloxy)carbonyl)-, cyclic 2',3'-carbonate
  • Capecitabine-2',3'-cyclic Carbonate
  • Capecitabine Related Compound C

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