
Chemical identity
Dienogest EP Impurity F
CAS 67473-36-3 · C20H27NO2
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-12842 |
|---|---|
| PubChem CID | 15158993 |
| Name | Dienogest EP Impurity F |
| CAS RN | 67473-36-3 |
| Molecular formula | C20H27NO2 |
| Molecular weight | 313.44 g/mol |
| IUPAC name | (17-hydroxy-3-oxoestr-4-en-17α-yl)acetonitrile |
| InChIKey | MGEXGMZKAAFZNS-JBKQDOAHSA-N |
02Structure identifiers

Structure facts for this exact identity.
| Molecular formula | C20H27NO2 |
|---|---|
| InChIKey | MGEXGMZKAAFZNS-JBKQDOAHSA-N |
| Ring count | 4 |
| Defined stereocentres | 6 |
| Unassigned stereocentres | 0 |
| SMILES | C[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@]2(CC#N)O)CCC4=CC(=O)CC[C@H]34 |
|---|---|
| InChI | InChI=1S/C20H27NO2/c1-19-8-6-16-15-5-3-14(22)12-13(15)2-4-17(16)18(19)7-9-20(19,23)10-11-21/h12,15-18,23H,2-10H2,1H3/t15-,16+,17+,18-,19-,20+/m0/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 67473-36-3 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 67473-36-3 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
Dienogest
View API and impurity familyOther names
- 17alpha-Cyanomethyl-19-nortestosterone
- lpha)-17-Hydroxy-3-oxo-19-norpregn-4-ene-21-nitrile
- 2-[(8R,9S,10R,13S,14S,17R)-17-hydroxy-13-methyl-3-oxo-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-yl]acetonitrile
- 19-Norpregn-4-ene-21-nitrile, 17-hydroxy-3-oxo-, (17alpha)-
- 17-Cmnt
- STS-384
- STS-528
- 17?-Cyanomethyl-19-nortestosterone
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 15158993
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.
