
Chemical identity
V8SCE8F48K
CAS 120705-68-2 · C21H33NO5SSi
01Identity
Identifiers and names for this exact compound. Empty fields are left unassigned.
| Lazychem ID | LC-15036 |
|---|---|
| PubChem CID | 13880328 |
| Name | V8SCE8F48K |
| CAS RN | 120705-68-2 |
| Molecular formula | C21H33NO5SSi |
| Molecular weight | 439.65 g/mol |
| IUPAC name | (5R,6S)-allyl 6-((R)-1-((tert-butyldimethylsilyl)oxy)ethyl)-7-oxo-3-((R)-tetrahydrofuran-2-yl)-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate |
| InChIKey | MASHLNCIEFIURF-MMMWYMCRSA-N |
02Structure identifiers

The parsed structure contains 3 rings, includes aliphatic carbon, has 4 defined stereocentres. These statements are calculated from the published structure string.
| Defined stereocentres | 4 |
|---|---|
| Unassigned stereocentres | 0 |
| Ring count | 3 |
| Secondary amines | 0 |
| Tertiary amines | 0 |
| N-methyl amine sites | 0 |
| SMILES | C[C@H]([C@@H]1[C@@H]2N(C1=O)C(=C(S2)[C@@H]3CCCO3)C(=O)OCC=C)O[Si](C)(C)C(C)(C)C |
|---|---|
| InChI | Not listed |
| Formula from structure | C21H33NO5SSi |
| Molecular weight from structure | 439.65 g/mol |
03Stereochemistry
The published structure contains 4 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.


Faropenem Related Compound 3
CAS 120705-67-1
MASHLNCIEFIURF-BKEDOTJMSA-N
4 defined, 0 unassigned centres
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 120705-68-2 has no exact match in the reviewed published schedule. |
|---|---|---|
| SCOMET | NO EXACT REVIEWED CAS MATCH | CAS 120705-68-2 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
Faropenem
View API and impurity familyOther names
- Faropenem Impurity 7
- 4-Thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid, 6-[1-[[(1,1-dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-(tetrahydro-2-furanyl)-, 2-propenyl ester, [5R-[3(S*),5alpha,6alpha(R*)]]-
- 120705-68-2
- V8SCE8F48K
- DTXSID501098798
- 4-Thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid, 6-[1-[[(1,1-dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-(tetrahydro-2-furanyl)-, 2-propenyl ester, [5R-[3(S*),5I+/-,6I+/-(R*)]]-
- Allyl (5R)-6-[(R)-1-[tert-butylbis(methyl)siloxy]ethyl]-7-oxo-3-[(S)-perhydro-2-furyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate
- allyl (5R,6S)-6-((R)-1-((tert-butyldimethylsilyl)oxy)ethyl)-7-oxo-3-((S)-tetrahydrofuran-2-yl)-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate
- Prop-2-enyl (5R)-6-[(1R)-1-[tert-butyldi(methyl)silyloxy]ethyl]-3-[(2S)-dihydrofuran-2(3H)-yl]-7-oxo-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate
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 13880328
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.
