Chemical identity

Triamcinolone EP Impurity C / Pretriamcinolone

CAS 337-02-0 · C21H29FO6

01Identity

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

Lazychem IDLC-30105
PubChem CID228785
NameTriamcinolone EP Impurity C / Pretriamcinolone
CAS RN337-02-0
Molecular formulaC21H29FO6
Molecular weight396.45 g/mol
IUPAC name9-Fluoro-11β,16α,17,21-tetrahydroxypregn-4-ene-3,20-dione
InChIKeySXQQMCLQCSKJNC-OBYCQNJPSA-N

02Structure identifiers

2D structurePubChem CID 228785
Two-dimensional chemical structure of Triamcinolone EP Impurity C / Pretriamcinolone, CAS 337-02-0
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
SMILESC[C@]12CCC(=O)C=C1CC[C@@H]3[C@@]2([C@H](C[C@]4([C@H]3C[C@H]([C@@]4(C(=O)CO)O)O)C)O)F
InChINot listed
Formula from structureC21H29FO6
Molecular weight from structure396.45 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 337-02-0 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 337-02-0 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

Triamcinolone

View API and impurity family

Other names

  • Triamcinolone EP Impurity C
  • Pretriamcinolone
  • 9-Fluoro-11beta,16alpha,17,21-tetrahydroxypregn-4-ene-3,20-dione
  • 337-02-0
  • 1,2-Dihydrotriamcinolone
  • 9
  • A-Fluoro-16
  • A-hydroxyhydrocortisone
  • 549QHA3WRP
  • 9alpha-Fluoro-16alpha-hydroxyhydrocortisone
  • 9alpha-Fluoro-11beta,16alpha,17alpha,21-tetrahydroxypregn-4-ene-3,20-dione
  • NSC-21913

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