Chemical identity

Dexamethasone Acetate EP Impurity I

CAS 3949-26-6 · C26H33FO7

01Identity

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

Lazychem IDLC-31670
PubChem CID15219297
NameDexamethasone Acetate EP Impurity I
CAS RN3949-26-6
Molecular formulaC26H33FO7
Molecular weight476.22 g/mol
IUPAC name2-((8S, 9R, 10S, 11S, 13S, 14S, 16R, 17R)-11-acetoxy-9-fluoro-17-hydroxy-10, 13, 16-trimethyl-3-oxo-6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl)-2-oxoethyl acetate
InChIKeyGTECTIGXIMGLJQ-YIEQOVFOSA-N

02Structure identifiers

2D structurePubChem CID 15219297
Two-dimensional chemical structure of Dexamethasone Acetate EP Impurity I, CAS 3949-26-6
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)OC(=O)C)F)C
InChINot listed
Formula from structureC26H33FO7
Molecular weight from structure476.22 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

3 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 3949-26-6 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 3949-26-6 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

  • (11?, 16?)-1, 21-bis(acetyloxy)-9-fluoro-17-hydroxy-16-methylpregna-1, 4-diene-3, 20-dione
  • Dexamethasone 11,21-diacetate
  • 3949-26-6
  • 6VQU5CHJ9B
  • UNII-6VQU5CHJ9B
  • Dexamethasone acetate impurity I [EP]
  • Dexamethasone Acetate EP Impurity I
  • [2-[(8S,9R,10S,11S,13S,14S,16R,17R)-11-acetyloxy-9-fluoro-17-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] acetate
  • 2-((8S,9R,10S,11S,13S,14S,16R,17R)-11-Acetoxy-9-fluoro-17-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl)-2-oxoethyl acetate
  • Pregna-1,4-diene-3,20-dione, 11,21-bis(acetyloxy)-9-fluoro-17-hydroxy-16-methyl-, (11beta,16alpha)-
  • Pregna-1,4-diene-3,20-dione, 9-fluoro-11beta,17,21-trihydroxy-16alpha-methyl-, 11,21-diacetate
  • Medroxyprogesterone 17-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