
Chemical identity
Simvastatin Impurity 17
CAS not listed · C42H79NO5Si2
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-28113 |
|---|---|
| PubChem CID | 176476959 |
| Name | Simvastatin Impurity 17 |
| CAS RN | Not listed |
| Molecular formula | C42H79NO5Si2 |
| Molecular weight | 734.25 g/mol |
| IUPAC name | [(1S,3R,7S,8S,8aR)-8-[(3R,5R)-3,5-bis[[tert-butyl(dimethyl)silyl]oxy]-7-[butyl(methyl)amino]-7-oxoheptyl]-3,7-dimethyl-1,2,3,7,8,8a-hexahydronaphthalen-1-yl] 2,2-dimethylbutanoate |
| InChIKey | SUKGPYIDIDAMAR-UTFAGHIVSA-N |
02Structure identifiers

The parsed structure contains 2 rings, includes aliphatic carbon, has 7 defined stereocentres. These statements are calculated from the published structure string.
| Defined stereocentres | 7 |
|---|---|
| Unassigned stereocentres | 0 |
| Ring count | 2 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | CCCCN(C)C(=O)C[C@@H](C[C@@H](CC[C@H]1[C@H](C=CC2=C[C@@H](C[C@@H]([C@H]12)OC(=O)C(C)(C)CC)C)C)O[Si](C)(C)C(C)(C)C)O[Si](C)(C)C(C)(C)C |
|---|---|
| InChI | Not listed |
| Formula from structure | C42H79NO5Si2 |
| Molecular weight from structure | 734.25 g/mol |
03Stereochemistry
The published structure contains 7 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 | No CAS number is available for an exact comparison. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | No CAS number is available for an exact comparison. |
| 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
Simvastatin
View API and impurity familyOther names
No synonyms are listed.
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 176476959
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.
