Chemical identity

Dexamethasone Acetate EP Impurity A

CAS 50-02-2 · C22H29FO5

01Identity

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

Lazychem IDLC-12527
PubChem CID5743
NameDexamethasone Acetate EP Impurity A
CAS RN50-02-2
Molecular formulaC22H29FO5
Molecular weight392.46 g/mol
IUPAC name9-Fluoro-11β,17,21-trihydroxy-16α-methylpregna-1,4-diene-3,20-dione
InChIKeyUREBDLICKHMUKA-CXSFZGCWSA-N

02Structure identifiers

2D structurePubChem CID 5743
Two-dimensional chemical structure of Dexamethasone Acetate EP Impurity A, CAS 50-02-2
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)CO)O)C)O)F)C
InChINot listed
Formula from structureC22H29FO5
Molecular weight from structure392.46 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 50-02-2 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 50-02-2 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; Betamethasone; Dexamthasone

View API and impurity family

Other names

  • Dexamethasone
  • 9alpha-Fluoro-16alpha-methylprednisolone
  • Betamethasone EP Impurity A
  • Dexamethasone Isonicotinate EP Impurity A
  • Dexamethasone Sodium Phosphate EP Impurity A
  • Dexamethasone for peak identification CRS (Y0001593)
  • Dexamethasone CRS (D0700000)
  • Dexamthasone Acetate EP impurity A/ betamethasone Acetate EP impurity A (L11140)
  • Betamethasone Imp. A (EP)
  • Dexamethasone Acetate Imp. A (EP)
  • Dexamethasone Sodium Phosphate Imp. A (EP)
  • 9-Fluoro-11beta,17,21-trihydroxy-16alpha-methylpregna-1,4-diene-3,20-dione

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