![Molecular structure of 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzene-1-sulfonyl chloride (CAS 139756-22-2)](/images/chem_structures_svg/273/139756-22-2.svg)
4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzene-1-sulfonyl chloride
Also known as: Sildenafil chlorosulfonyl, Sildenafil Chlorosulfone Impurity, 5-(5-Chlorosulfonyl-2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one, 3-(4,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-benzenesulfonyl chloride, 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-4,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonyl chloride, Benzenesulfonyl chloride, 3-(4,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-
4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzene-1-sulfonyl chloride (CAS 139756-22-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C17H19ClN4O4S and a molecular weight of 410.875 g/mol. Key properties include a melting point of 180-182ºC, a boiling point of 621.4±65.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 329.6±34.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 139756-22-2
- Jingsj CID
- J-90080-1
- Molecular Formula
- C17H19ClN4O4S
- Molecular Weight
- 410.875 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 180-182ºC |
|---|---|
| Boiling Point | 621.4±65.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 329.6±34.3 °C |
| Exact Mass | 410.081543 |
| PSA | 115.32000 |
| LogP | 2.76 |
| Vapor Pressure | 0.0±1.8 mmHg at 25°C |
| Refractive Index | 1.663 |
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzene-1-sulfonyl chloride?
The CAS number of 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzene-1-sulfonyl chloride is 139756-22-2.
What are the molecular formula and molecular weight of 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzene-1-sulfonyl chloride?
4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzene-1-sulfonyl chloride has molecular formula C17H19ClN4O4S and molecular weight 410.875 g/mol.
What are the upstream and downstream products of 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzene-1-sulfonyl chloride?
For 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzene-1-sulfonyl chloride, Upstream Products: 5-(2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one; Downstream Products: Homo Sildenafil, Hydroxyhomosildenafil.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzene-1-sulfonyl chloride (CAS 139756-22-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-90080-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.