Chemical identity

Dexamethasone Impurity 13

CAS not listed · C22H28O5

01Identity

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

Lazychem IDLC-12559
PubChem CID177828843
NameDexamethasone Impurity 13
CAS RNNot listed
Molecular formulaC22H28O5
Molecular weight372.5 g/mol
IUPAC name(7R,8R)-7-Hydroxy-7-(2-hydroxyacetyl)-4a,6a,8-trimethyl-5a,6,6a,7,8,9,9a,9b,10,11-decahydrocyclopenta[1,2]phenanthro[4,4a-b]oxiren-2(4aH)-one
InChIKeyGBDXNHBVYAMODG-FNJVAUFWSA-N

02Structure identifiers

2D structurePubChem CID 177828843
Two-dimensional chemical structure of Dexamethasone Impurity 13
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 5 rings, includes aliphatic carbon, has 2 defined stereocentres. These statements are calculated from the published structure string.

Defined stereocentres2
Unassigned stereocentres6
Ring count5
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESC[C@@H]1CC2C3CCC4=CC(=O)C=CC4(C35C(O5)CC2([C@]1(C(=O)CO)O)C)C
InChINot listed
Formula from structureC22H28O5
Molecular weight from structure372.5 g/mol

03Stereochemistry

The published structure contains 2 defined and 6 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres2Structure assigned
Unassigned centres6Structure unspecified
Assignment statusPartially assignedExact published identity
Tetrahedral upper bound≤ 256Before symmetry reduction

Published same-connectivity configurations

6 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 FOUNDNo CAS number is available for an exact comparison.
SCOMETNO EXACT REVIEWED CAS MATCHNo CAS number is available for an exact comparison.
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

No synonyms are listed.

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