(5R,6S)-6-[(1R)-1-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-[(2R)-tetrahydro-2-furanyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 2-propenyl ester
Also known as: (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, Allyl (5R,6S)-6-[(1R)-1-{[tert-butyl(dimethyl)silyl]oxy}ethyl]-7-oxo-3-[(2R)-tetrahydrofuran-2-yl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate, Faropenem Related Compound 3, All(1'R,2"R,5R,6S)-6(1'-tert-butyl dimethylsilyloxyethy)-2-(2"-tetrahydrofuranyl)penem-3-carboxylate, prop-2-en-1-yl (5R,6S)-6-[(1R)-1-{[tert-butyl(dimethyl)silyl]oxy}ethyl]-7-oxo-3-[(2R)-tetrahydrofuran-2-yl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate
(5R,6S)-6-[(1R)-1-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-[(2R)-tetrahydro-2-furanyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 2-propenyl ester (CAS 120705-67-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C21H33NO5SSi and a molecular weight of 439.641 g/mol. Key properties include a boiling point of 536.3±50.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 278.1±30.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 120705-67-1
- Jingsj CID
- J-1070879-9
- Molecular Formula
- C21H33NO5SSi
- Molecular Weight
- 439.641 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 536.3±50.0 °C at 760 mmHg |
|---|---|
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 278.1±30.1 °C |
| Exact Mass | 439.184875 |
| PSA | 90.37000 |
| LogP | 3.67 |
| Vapor Pressure | 0.0±1.4 mmHg at 25°C |
| Refractive Index | 1.542 |
Frequently Asked Questions
What is the CAS number of (5R,6S)-6-[(1R)-1-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-[(2R)-tetrahydro-2-furanyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 2-propenyl ester?
The CAS number of (5R,6S)-6-[(1R)-1-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-[(2R)-tetrahydro-2-furanyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 2-propenyl ester is 120705-67-1.
What are the molecular formula and molecular weight of (5R,6S)-6-[(1R)-1-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-[(2R)-tetrahydro-2-furanyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 2-propenyl ester?
(5R,6S)-6-[(1R)-1-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-[(2R)-tetrahydro-2-furanyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 2-propenyl ester has molecular formula C21H33NO5SSi and molecular weight 439.641 g/mol.
What are the upstream and downstream products of (5R,6S)-6-[(1R)-1-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-[(2R)-tetrahydro-2-furanyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 2-propenyl ester?
For (5R,6S)-6-[(1R)-1-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-[(2R)-tetrahydro-2-furanyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 2-propenyl ester, Upstream Products: allyl chlorooxoacetate; Downstream Products: Faropenem sodium.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(5R,6S)-6-[(1R)-1-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-[(2R)-tetrahydro-2-furanyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 2-propenyl ester (CAS 120705-67-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1070879-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.