Chemical identity

Mometasone Furoate EP Impurity O / Mometasone EP Impurity O

CAS 24916-91-4 · C24H31ClO6

01Identity

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

Lazychem IDLC-20549
PubChem CID14862779
NameMometasone Furoate EP Impurity O / Mometasone EP Impurity O
CAS RN24916-91-4
Molecular formulaC24H31ClO6
Molecular weight450.95 g/mol
IUPAC name9-Chloro-11β,17-dihydroxy-16α-methyl-3,20-dioxopregna-1,4-dien-21-yl acetate
InChIKeyXHCFMNLEYHEXKU-RPRRAYFGSA-N

02Structure identifiers

2D structurePubChem CID 14862779
Two-dimensional chemical structure of Mometasone Furoate EP Impurity O / Mometasone EP Impurity O, CAS 24916-91-4
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
SMILESC[C@@H]1C[C@H]2[C@@H]3CCC4=CC(=O)C=C[C@@]4([C@]3([C@H](C[C@@]2([C@]1(C(=O)COC(=O)C)O)C)O)Cl)C
InChINot listed
Formula from structureC24H31ClO6
Molecular weight from structure450.95 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

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 24916-91-4 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 24916-91-4 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

Mometasone

View API and impurity family

Other names

  • Mometasone Furoate Impurity O
  • Mometasone EP Impurity O
  • Icomethasone 21-Acetate
  • 24916-91-4
  • Icometasone-21-acetate
  • QMP3UNH3SX
  • [2-[(8S,9R,10S,11S,13S,14S,16R,17R)-9-Chloro-11,17-dihydroxy-10,13,16-trimethyl-3-oxo-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] acetate
  • Mometasone Furoate EP Impurity O
  • 9-Chloro-11beta,17-dihydroxy-16alpha-methyl-3,20-dioxopregna-1,4-dien-21-yl Acetate (Icometasone 21-Acetate)
  • Pregna-1,4-diene-3,20-dione, 21-(acetyloxy)-9-chloro-11,17-dihydroxy-16-methyl-, (11ss,16a)- (9CI)
  • Pregna-1,4-diene-3,20-dione, 9-chloro-11ss,17,21-trihydroxy-16a-methyl-, 21-acetate (7CI,8CI)
  • Icometasone 21-Acetate

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