
Chemical identity
Difluprednate 21-Desacetyl Impurity
CAS 23640-96-2 · C25H32F2O6
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-12907 |
|---|---|
| PubChem CID | 12986413 |
| Name | Difluprednate 21-Desacetyl Impurity |
| CAS RN | 23640-96-2 |
| Molecular formula | C25H32F2O6 |
| Molecular weight | 466.51 g/mol |
| IUPAC name | (6α,11β)-6,9-Difluoro-11,21-dihydroxy-17-(1-oxobutoxy)pregna-1,4-diene-3,20-dione |
| InChIKey | BQEJAAIPKDQEPV-MXHGPKCJSA-N |
02Structure identifiers

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 stereocentres | 8 |
|---|---|
| Unassigned stereocentres | 0 |
| Ring count | 4 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | CCCC(=O)O[C@@]1(CC[C@@H]2[C@@]1(C[C@@H]([C@]3([C@H]2C[C@@H](C4=CC(=O)C=C[C@@]43C)F)F)O)C)C(=O)CO |
|---|---|
| InChI | Not listed |
| Formula from structure | C25H32F2O6 |
| Molecular weight from structure | 466.51 g/mol |
03Stereochemistry
The published structure contains 8 defined and 0 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.
Published same-connectivity configurations
1 recordThese 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 / RCS | NO EXACT MATCH FOUND | CAS 23640-96-2 has no exact match in the reviewed published schedule. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | CAS 23640-96-2 has no exact match in the reviewed SCOMET list. |
| Review date | 2026-08-01 | Recheck the current official instruments for the material, concentration, activity and date in question. |
- Narcotic Drugs and Psychotropic Substances Act, 1985, ScheduleDepartment of Revenue, Government of India · reviewed 2026-08-01
- Controlled-substances notifications and amendmentsDepartment of Revenue, Government of India · reviewed 2026-08-01
- Appendix 3, SCOMET ListDirectorate General of Foreign Trade, Government of India · reviewed 2026-08-01
05Names and relationships
Associated parent compound
Difluprednate
View API and impurity familyOther names
- (6alpha,11beta)-6,9-Difluoro-11,21-dihydroxy-17-(1-oxobutoxy)pregna-1,4-diene-3,20-dione
- 6alpha,9-Difluoro-11beta,17,21-trihydroxypregna-1,4-diene-3,20-dione 17-butyrate
- 44L6C59WTE
- DTXSID00178314
- DFBMETABOLITE OF DIFLUPREDNATE
- 6.ALPHA.,9-DIFLUOROPREDNISOLONE 17BUTYRATE
- BUTYRIC ACID, 17-ESTER WITH 6.ALPHA.,9-DIFLUORO-11.BETA.,17,21-TRIHYDROXYPREGNA-1,4-DIENE-3,20-DIONE
- PREGNA-1,4-DIENE-3,20-DIONE, 6,9-DIFLUORO-11,21-DIHYDROXY-17-(1-OXOBUTOXY)-, (6.ALPHA.,11.BETA.)-
- PREGNA-1,4-DIENE-3,20-DIONE, 6.ALPHA.,9-DIFLUORO-11.BETA.,17,21-TRIHYDROXY-, 17-BUTYRATE
- RefChem:69680
- DTXCID30100805
- 23640-96-2
06Documented history
Dated discovery, occurrence, use and issue claims are published only when a suitable primary or government source is available.
No verified discovery, first report, occurrence, use or issue event is currently available for this identity.
07Sources
- S01PubChem compound record, CID 12986413
Names and machine-readable chemical identity properties.
- S02NCBI website and molecular data policies
Reuse policy for NCBI molecular data. This page does not reproduce vendor descriptions or contributed narrative text.
- S03Narcotic Drugs and Psychotropic Substances Act, 1985, Schedule
Department of Revenue, Government of India. Used for the exact-compound India status shown on this page.
- S04Controlled-substances notifications and amendments
Department of Revenue, Government of India. Used for the exact-compound India status shown on this page.
- S05Appendix 3, SCOMET List
Directorate General of Foreign Trade, Government of India. Used for the exact-compound India status shown on this page.
