Chemical identity

Prednisolone Acetate EP Impurity D / Prednisolone 21-Deoxy Impurity / Deprodone

CAS 20423-99-8 · C21H28O4

01Identity

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

Lazychem IDLC-25872
PubChem CID10969997
NamePrednisolone Acetate EP Impurity D / Prednisolone 21-Deoxy Impurity / Deprodone
CAS RN20423-99-8
Molecular formulaC21H28O4
Molecular weight344.44 g/mol
IUPAC name11β,17-Dihydroxypregna-1,4-diene-3,20-dione
InChIKeyKQZSMOGWYFPKCH-UJPCIWJBSA-N

02Structure identifiers

2D structurePubChem CID 10969997
2D structure: Prednisolone Acetate EP Impurity D / Prednisolone 21-Deoxy Impurity / Deprodone, CAS 20423-99-8
Structure of Prednisolone Acetate EP Impurity D / Prednisolone 21-Deoxy Impurity / Deprodone (CAS 20423-99-8). LazyChem record. Source identity: PubChem CID 10969997. Confirm the identifiers before analytical use.Download structure image

Structure facts for this exact identity.

Molecular formulaC21H28O4
InChIKeyKQZSMOGWYFPKCH-UJPCIWJBSA-N
Ring count4
Defined stereocentres7
Unassigned stereocentres0
SMILESCC(=O)[C@]1(CC[C@@H]2[C@@]1(C[C@@H]([C@H]3[C@H]2CCC4=CC(=O)C=C[C@]34C)O)C)O
InChIInChI=1S/C21H28O4/c1-12(22)21(25)9-7-16-15-5-4-13-10-14(23)6-8-19(13,2)18(15)17(24)11-20(16,21)3/h6,8,10,15-18,24-25H,4-5,7,9,11H2,1-3H3/t15-,16-,17-,18+,19-,20-,21-/m0/s1

03Stereochemistry

The published structure contains 7 defined and 0 unassigned tetrahedral stereocentres. The exact wedge-and-dash depiction is shown above.

Defined stereocentres72D structure
Unassigned stereocentres02D structure
Assignment statusFully assignedExact published identity
Tetrahedral upper bound≤ 128Before 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 20423-99-8 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 20423-99-8 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 Acetate EP Impurity D
  • Prednisolone 21-Deoxy Impurity / Deprodone
  • Deprodone
  • Deprodona
  • Deprodonum
  • Deprodone [INN:BAN]
  • Deprodonum [INN-Latin]
  • Deprodona [INN-Spanish]
  • UNII-Z380L7N00P
  • DESOLONE

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