Chemical identity

Clobetasol Propionate EP Impurity I / Betamethasone 17-Propionate 21-Mesylate

CAS 15423-80-0 · C26H35FO8S

01Identity

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

Lazychem IDLC-11171
PubChem CID12960907
NameClobetasol Propionate EP Impurity I / Betamethasone 17-Propionate 21-Mesylate
CAS RN15423-80-0
Molecular formulaC26H35FO8S
Molecular weight526.62 g/mol
IUPAC name(8S,9R,10S,11S,13S,14S,16S,17R)-9-fluoro-11-hydroxy-10,13,16-trimethyl-17-(2-((methylsulfonyl)oxy)acetyl)-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate
InChIKeyLJIXIWVFIFXMTE-SOMXGXJRSA-N

02Structure identifiers

2D structurePubChem CID 12960907
Two-dimensional chemical structure of Clobetasol Propionate EP Impurity I / Betamethasone 17-Propionate 21-Mesylate, CAS 15423-80-0
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 8 defined stereocentres, contains at least one halogen atom. These statements are calculated from the published structure string.

Defined stereocentres8
Unassigned stereocentres0
Ring count4
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESCCC(=O)O[C@@]1([C@H](C[C@@H]2[C@@]1(C[C@@H]([C@]3([C@H]2CCC4=CC(=O)C=C[C@@]43C)F)O)C)C)C(=O)COS(=O)(=O)C
InChINot listed
Formula from structureC26H35FO8S
Molecular weight from structure526.62 g/mol

03Stereochemistry

The published structure contains 8 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres8Structure assigned
Unassigned centres0Structure unspecified
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 256Before 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 15423-80-0 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 15423-80-0 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

Clobetasol

View API and impurity family

Other names

  • Clobetasol Propionate EP Impurity I
  • Betamethasone 17-Propionate 21-Mesylate
  • (11β,16β)-9-Fluoro-11-hydroxy-16-methyl-21-[(methylsulfonyl)oxy]-17-(1-oxopropoxy)pregna-1,4-diene-3,20-dione
  • 9-Fluoro-11β-hydroxy-16β-methyl-21-[(methylsulfonyl)oxy]-3,20-dioxopregna-1,4-dien-17-yl propanoate
  • (11beta,16beta)-9-Fluoro-11-hydroxy-16-methyl-21-((methylsulfonyl)oxy)-17-(1-oxopropoxy)pregna-1,4-diene-3,20-dione
  • 15423-80-0
  • GA4A80ZP11
  • UNII-GA4A80ZP11
  • Clobetasol propionate impurity I [EP]
  • CLOBETASOL PROPIONATE IMPURITY I [EP IMPURITY]
  • 9-Fluoro-11beta-hydroxy-16beta-methyl-21-((methylsulfonyl)oxy)-3,20-dioxopregna-1,4-dien-17-yl propanoate
  • Pregna-1,4-diene-3,20-dione, 9-fluoro-11-hydroxy-16-methyl-21-((methylsulfonyl)oxy)-17-(1-oxopropoxy)-, (11beta,16beta)-

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