
Chemical identity
Chlormadinone Acetate EP Impurity K
CAS 425-51-4 · C23H30O4
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-10438 |
|---|---|
| PubChem CID | 200136 |
| Name | Chlormadinone Acetate EP Impurity K |
| CAS RN | 425-51-4 |
| Molecular formula | C23H30O4 |
| Molecular weight | 370.49 g/mol |
| IUPAC name | (8R,9S,10R,13S,14S,17R)-17-acetyl-10,13-dimethyl-3-oxo-2,3,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta [a]phenanthren-17-yl acetate |
| InChIKey | URXWVWVPMJSAJD-KOORYGTMSA-N |
02Structure identifiers

The parsed structure contains 4 rings, includes aliphatic carbon, has 6 defined stereocentres. These statements are calculated from the published structure string.
| Defined stereocentres | 6 |
|---|---|
| Unassigned stereocentres | 0 |
| Ring count | 4 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | CC(=O)[C@]1(CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2C=CC4=CC(=O)CC[C@]34C)C)OC(=O)C |
|---|---|
| InChI | Not listed |
| Formula from structure | C23H30O4 |
| Molecular weight from structure | 370.49 g/mol |
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 | NO EXACT MATCH FOUND | CAS 425-51-4 has no exact match in the reviewed published schedule. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | CAS 425-51-4 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
Chlormadinone
View API and impurity familyOther names
- Δ6-Acetoxyprogesterone
- Delta-6-Acetoxyprogesterone
- 6,7-Dehydro-17a-acetoxy Progesterone
- 17-(Acetyloxy)pregna-4,6-diene-3,20-dione
- 17-Hydroxypregna-4,6-diene-3,20-dione Acetate
- 17a-Acetoxypregna-4,6-diene-3,20-dione
- 17a-Hydroxy-6- dehydroprogesterone Acetate
- Melengestro Acetate
- NSC 77897
- Pregna-4,6-dien-17-ol-3,20-dione Acetate
- ?6-Dehydro-17a-acetoxyprogesterone
- 425-51-4
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 200136
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.
