
Chemical identity
Ergocalciferol EP Impurity E
CAS 115-61-7 · C28H44O
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-14302 |
|---|---|
| PubChem CID | 9547230 |
| Name | Ergocalciferol EP Impurity E |
| CAS RN | 115-61-7 |
| Molecular formula | C28H44O |
| Molecular weight | 396.7 g/mol |
| IUPAC name | (3S,6E,22E)-9,10-Secoergosta-5(10),6,8,22-tetraen-3-ol |
| InChIKey | XQFJZHAVTPYDIQ-LETJEVNCSA-N |
02Structure identifiers

Structure facts for this exact identity.
| Molecular formula | C28H44O |
|---|---|
| InChIKey | XQFJZHAVTPYDIQ-LETJEVNCSA-N |
| Ring count | 3 |
| Defined stereocentres | 6 |
| Unassigned stereocentres | 0 |
| SMILES | CC1=C(C[C@H](CC1)O)/C=C/C2=CCC[C@]3([C@H]2CC[C@@H]3[C@H](C)/C=C/[C@H](C)C(C)C)C |
|---|---|
| InChI | InChI=1S/C28H44O/c1-19(2)20(3)9-10-22(5)26-15-16-27-23(8-7-17-28(26,27)6)12-13-24-18-25(29)14-11-21(24)4/h8-10,12-13,19-20,22,25-27,29H,7,11,14-18H2,1-6H3/b10-9+,13-12+/t20-,22+,25-,26+,27-,28+/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
2 recordsThese records have the same connectivity, molecular formula and protonation layer, but a different complete InChIKey stereochemical layer. Only separately structure-linked records are shown.


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 115-61-7 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 115-61-7 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
Ergocalciferol
View API and impurity familyOther names
- Tachysterol2
- Tachysterol
- Tachysterin2
- UNII-9SOR58S8QJ
- (6E,22E)-(3R)-9,10-Secoergosta-5(10),6,8,22-tetraen-3-ol
- TACHYSTEROL [MI]
- EINECS 204-096-7
- (6E,22E)-(3S)-9,10-seco-5(10),6,8,22-ergostatetraen-3-ol
- 9,10-Secoergosta-5(10),6,8,22-tetraen-3-ol, (3.beta.,6E,22E)-
- ERGOCALCIFEROL IMPURITY E [EP IMPURITY]
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 9547230
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.
