Chemical identity

Prednisolone EP Impurity G / 20β-Hydroxyprednisolone / 20(S)-Hydroxy Prednisolone

CAS 2299-46-9 · C21H30O5

01Identity

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

Lazychem IDLC-25884
PubChem CID13962391
NamePrednisolone EP Impurity G / 20β-Hydroxyprednisolone / 20(S)-Hydroxy Prednisolone
CAS RN2299-46-9
Molecular formulaC21H30O5
Molecular weight362.46
IUPAC name11β,17,20β,21-Tetrahydroxypregna-1,4-dien-3-one ;
InChIKeyLCOVYWIXMAJCDS-FJWDNACWSA-N

02Structure identifiers

2D structurePubChem CID 13962391
2D structure: Prednisolone EP Impurity G / 20β-Hydroxyprednisolone / 20(S)-Hydroxy Prednisolone, CAS 2299-46-9
Structure of Prednisolone EP Impurity G / 20β-Hydroxyprednisolone / 20(S)-Hydroxy Prednisolone (CAS 2299-46-9). LazyChem record. Source identity: PubChem CID 13962391. Confirm the identifiers before analytical use.Download structure image

Structure facts for this exact identity.

Molecular formulaC21H30O5
InChIKeyLCOVYWIXMAJCDS-FJWDNACWSA-N
Ring count4
Defined stereocentres8
Unassigned stereocentres0
SMILESC[C@]12C[C@@H]([C@H]3[C@H]([C@@H]1CC[C@@]2([C@H](CO)O)O)CCC4=CC(=O)C=C[C@]34C)O
InChIInChI=1S/C21H30O5/c1-19-7-5-13(23)9-12(19)3-4-14-15-6-8-21(26,17(25)11-22)20(15,2)10-16(24)18(14)19/h5,7,9,14-18,22,24-26H,3-4,6,8,10-11H2,1-2H3/t14-,15-,16-,17-,18+,19-,20-,21-/m0/s1

03Stereochemistry

The published structure contains 8 defined and 0 unassigned tetrahedral stereocentres. The exact wedge-and-dash depiction is shown above.

Defined stereocentres82D structure
Unassigned stereocentres02D structure
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 / RCSNOT FOUND IN REVIEWED ENTRIESCAS 2299-46-9 was not found in the reviewed exact-identity entries. Generic, class, analogue, salt and isomer provisions were not evaluated.
SCOMETNOT FOUND IN REVIEWED CAS ENTRIESCAS 2299-46-9 was not found in the reviewed exact-CAS mapping. Generic and analogue entries were not evaluated.

05Names and relationships

Associated parent compound

Prednisolone

View API and impurity family

Other names

  • Prednisolone EP Impurity G
  • (11beta,20S)-11,17,20,21-Tetrahydroxypregna-1,4-dien-3-one
  • 20(S)-Hydroxy Prednisolone
  • 20a-Hydroxy Prednisolone
  • 20alpha-dihydroprednisolone
  • UNII-NN79HDK6LV
  • 20beta-hydroxyprednisolone

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