
Chemical identity
Prednisone EP impurity D
CAS 10184-69-7 · C21H26O4
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-25909 |
|---|---|
| PubChem CID | 13964915 |
| Name | Prednisone EP impurity D |
| CAS RN | 10184-69-7 |
| Molecular formula | C21H26O4 |
| Molecular weight | 342.43 |
| IUPAC name | 17,21-Dihydroxypregna-1,4,9(11)-triene-3,20-dione |
| InChIKey | MATJXMUQVASJHW-ONKRVSLGSA-N |
02Structure identifiers

Structure facts for this exact identity.
| Molecular formula | C21H26O4 |
|---|---|
| InChIKey | MATJXMUQVASJHW-ONKRVSLGSA-N |
| Ring count | 4 |
| Defined stereocentres | 5 |
| Unassigned stereocentres | 0 |
| SMILES | C[C@]12CC=C3[C@H]([C@@H]1CC[C@@]2(C(=O)CO)O)CCC4=CC(=O)C=C[C@@]43C |
|---|---|
| InChI | InChI=1S/C21H26O4/c1-19-8-5-14(23)11-13(19)3-4-15-16(19)6-9-20(2)17(15)7-10-21(20,25)18(24)12-22/h5-6,8,11,15,17,22,25H,3-4,7,9-10,12H2,1-2H3/t15-,17+,19+,20+,21+/m1/s1 |
03Stereochemistry
The published structure contains 5 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 10184-69-7 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 10184-69-7 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
Prednisone
View API and impurity familyOther names
- Deltacortinene
- Prednisone impurity D [EP]
- Pregna-1,4,9(11)-triene-3,20-dione, 17,21-dihydroxy-
- PREDNISONE IMPURITY D [EP IMPURITY]
- Prednisone impurity D
- Prednisone EP Impurity D
- UNII-ZCF6ZW8234
- (8S,10S,13S,14S,17R)-17-hydroxy-17-(2-hydroxyacetyl)-10,13-dimethyl-7,8,12,14,15,16-hexahydro-6H-cyclopenta[a]phenanthren-3-one
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 13964915
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.
