
Chemical identity
Spironolactone EP Impurity F
CAS 976-71-6 · C₂₂H₂₈O₃
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-28418 |
|---|---|
| PubChem CID | 13789 |
| Name | Spironolactone EP Impurity F |
| CAS RN | 976-71-6 |
| Molecular formula | C₂₂H₂₈O₃ |
| Molecular weight | 340.46 g/mol |
| IUPAC name | (2′R)-3′,4′-Dihydro-5′H-spiro[androst-4,6-diene-17,2′-furan]-3,5′-dione |
| InChIKey | UJVLDDZCTMKXJK-WNHSNXHDSA-N |
02Structure identifiers

Structure facts for this exact identity.
| Molecular formula | C₂₂H₂₈O₃ |
|---|---|
| InChIKey | UJVLDDZCTMKXJK-WNHSNXHDSA-N |
| Ring count | 5 |
| Defined stereocentres | 6 |
| Unassigned stereocentres | 0 |
| SMILES | C[C@]12CCC(=O)C=C1C=C[C@@H]3[C@@H]2CC[C@]4([C@H]3CC[C@@]45CCC(=O)O5)C |
|---|---|
| InChI | InChI=1S/C22H28O3/c1-20-9-5-15(23)13-14(20)3-4-16-17(20)6-10-21(2)18(16)7-11-22(21)12-8-19(24)25-22/h3-4,13,16-18H,5-12H2,1-2H3/t16-,17+,18+,20+,21+,22-/m1/s1 |
03Stereochemistry
The published structure contains 6 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 976-71-6 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 976-71-6 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
Spironolactone
View API and impurity familyOther names
- Spironolactone Related Compound A/ Spironolactone BP Impurity F/ Eplerenone Canrenone Impurity/ Canrenone
- Canrenone
- Aldadiene
- SC-9376
- Canrenonum
- Spironolactone metabolite m1
- Pregna-4,6-diene-21-carboxylic acid, 17-hydroxy-3-oxo-, gamma-lactone (17alpha)-
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 13789
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.
