Chemical identity

17- Oxo Dexamethasone / 17-Keto Dexamethasone

CAS 1880-61-1 · C20H25FO3

01Identity

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

Lazychem IDLC-04225
PubChem CID242348
Name17- Oxo Dexamethasone / 17-Keto Dexamethasone
CAS RN1880-61-1
Molecular formulaC20H25FO3
Molecular weight332.41
IUPAC name(8S,9R,10S,11S,13S,14S,16R)-9-fluoro-11-hydroxy-10,13,16-trimethyl-7,8,9,10,11,12,13,14,15,16-decahydro-3H-cyclopenta[a]phenanthrene-3,17(6H)-dione
InChIKeyIZLVPOBNINIXJM-FETOPEPRSA-N

02Structure identifiers

2D structurePubChem CID 242348
Two-dimensional chemical structure of 17- Oxo Dexamethasone / 17-Keto Dexamethasone, CAS 1880-61-1
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 4 rings, includes aliphatic carbon, has 7 defined stereocentres, contains at least one halogen atom. These statements are calculated from the published structure string.

Defined stereocentres7
Unassigned stereocentres0
Ring count4
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESC[C@@H]1C[C@H]2[C@@H]3CCC4=CC(=O)C=C[C@@]4([C@]3([C@H](C[C@@]2(C1=O)C)O)F)C
InChINot listed
Formula from structureC20H25FO3
Molecular weight from structure332.41

03Stereochemistry

The published structure contains 7 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres7Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 128Before symmetry reduction

Published same-connectivity configurations

4 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 1880-61-1 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 1880-61-1 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

Dexamethasone

View API and impurity family

Other names

  • 17-Oxo Dexamethasone
  • 9-Fluoro-11-hydroxy-16-methylandrosta-1,4-diene-3,17-dione
  • 17-Keto Dexamethasone
  • 9alpha-Fluoro-11beta-hydroxy-16alpha-methylandrosta-1,4-diene-3,17-dione
  • 1880-61-1
  • NSC 50909
  • UNII-PMQ09660QC
  • PMQ09660QC
  • NSC 52437
  • 9-Fluoro-11beta-hydroxy-16alpha-methylandrosta-1,4-diene-3,17-dione
  • Androsta-1,4-diene-3,17-dione, 9-fluoro-11-hydroxy-16-methyl-, (11.beta.,16.alpha.)-
  • 9-FLUORO-11-HYDROXY-16-METHYLANDROSTA-1,4-DIENE-3,17-DIONE, (11.BETA.,16.ALPHA.)-

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