
Chemical identity
9-Fluoro Prednisolone
CAS 338-95-4 · C21H27FO5
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-04055 |
|---|---|
| PubChem CID | 127516 |
| Name | 9-Fluoro Prednisolone |
| CAS RN | 338-95-4 |
| Molecular formula | C21H27FO5 |
| Molecular weight | 378.4 g/mol |
| IUPAC name | (11β)-9-Fluoro-11,17,21-trihydroxy-pregna-1,4-diene-3,20-dione |
| InChIKey | WAIJIHDWAKJCBX-BULBTXNYSA-N |
02Structure identifiers

Structure facts for this exact identity.
| Molecular formula | C21H27FO5 |
|---|---|
| InChIKey | WAIJIHDWAKJCBX-BULBTXNYSA-N |
| Ring count | 4 |
| Defined stereocentres | 7 |
| Unassigned stereocentres | 0 |
| SMILES | C[C@]12C[C@@H]([C@]3([C@H]([C@@H]1CC[C@@]2(C(=O)CO)O)CCC4=CC(=O)C=C[C@@]43C)F)O |
|---|---|
| InChI | InChI=1S/C21H27FO5/c1-18-7-5-13(24)9-12(18)3-4-15-14-6-8-20(27,17(26)11-23)19(14,2)10-16(25)21(15,18)22/h5,7,9,14-16,23,25,27H,3-4,6,8,10-11H2,1-2H3/t14-,15-,16-,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.
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 | NOT FOUND IN REVIEWED ENTRIES | CAS 338-95-4 was not found in the reviewed exact-identity entries. Generic, class, analogue, salt and isomer provisions were not evaluated. |
|---|---|---|
| SCOMET | NOT FOUND IN REVIEWED CAS ENTRIES | CAS 338-95-4 was not found in the reviewed exact-CAS mapping. Generic and analogue entries were not evaluated. |
- Narcotic Drugs and Psychotropic Substances Act, 1985, ScheduleDepartment of Revenue, Government of India · source version 1985-09-16
- Controlled-substances notifications and amendmentsDepartment of Revenue, Government of India · source version 2026-03-11
- Appendix 3, SCOMET ListDirectorate General of Foreign Trade, Government of India · source version 2024-09-02
05Names and relationships
Associated parent compound
Prednisolone
View API and impurity familyOther names
- Isoflupredone
- 9-Fluoroprednisolone
- delta-Fluorocortisone
- Isoflupredona
- Isoflupredonum
- Pregna-1,4-diene-3,20-dione, 9-fluoro-11,17,21-trihydroxy-, (11beta)-
- 9 alpha-fluoroprednisolone
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 127516
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.
