N-Desmethyl Sildenafil
N-去甲基西地那非
Also known as: DESMETHYL SILDENAFIL, UK 103320, Sildenafil Impurity Q, Sildenafil EP Impurity F, 5-(2-ethoxy-5-(piperazin-1-ylsulfonyl)phenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
N-Desmethyl Sildenafil (CAS 139755-82-1) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C21H28N6O4S and a molecular weight of 460.55 g/mol. It is also known as DESMETHYL SILDENAFIL, UK 103320 and Sildenafil Impurity Q. Key properties include a melting point of 158-160ºC, a boiling point of 685.7ºC at 760 mmHg, a density of 1.44g/cm3 and a flash point of 368.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 139755-82-1
- Jingsj CID
- J-1981658-8
- Molecular Formula
- C21H28N6O4S
- Chinese Name
- N-去甲基西地那非
- Molecular Weight
- 460.55 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 158-160ºC |
|---|---|
| Boiling Point | 685.7ºC at 760 mmHg |
| Density | 1.44g/cm3 |
| Flash Point | 368.5ºC |
Frequently Asked Questions
What is the CAS number of N-Desmethyl Sildenafil?
The CAS number of N-Desmethyl Sildenafil is 139755-82-1.
What are the molecular formula and molecular weight of N-Desmethyl Sildenafil?
N-Desmethyl Sildenafil has molecular formula C21H28N6O4S and molecular weight 460.55 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "N-Desmethyl Sildenafil (CAS 139755-82-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1981658-8 (accessed 2026-10-26).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.