Elfazepam
依法西泮
Also known as: 7-Chloro-1-[2-(ethylsulfonyl)ethyl]-5-(2-fluorophenyl)-1,3-dihydro-2H-1,4-benzodiazepin-2-one, SK&F 72517, Elfazepamum, UNII-RM53R5R2BL, NSC 297938, 7-chloro-1-(2-ethylsulfonylethyl)-5-(2-fluorophenyl)-3H-1,4-benzodiazepin-2-one
Elfazepam (CAS 52042-01-0) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C19H18ClFN2O3S and a molecular weight of 408.87400 g/mol. It is also known as 7-Chloro-1-[2-(ethylsulfonyl)ethyl]-5-(2-fluorophenyl)-1,3-dihydro-2H-1,4-benzodiazepin-2-one, SK&F 72517 and Elfazepamum. Key properties include a boiling point of 666.4ºC at 760mmHg, a density of 1.37g/cm3 and a flash point of 356.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 52042-01-0
- Jingsj CID
- J-1326249-7
- Molecular Formula
- C19H18ClFN2O3S
- Chinese Name
- 依法西泮
- Molecular Weight
- 408.87400 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 666.4ºC at 760mmHg |
|---|---|
| Density | 1.37g/cm3 |
| Flash Point | 356.8ºC |
Frequently Asked Questions
What is the CAS number of Elfazepam?
The CAS number of Elfazepam is 52042-01-0.
What are the molecular formula and molecular weight of Elfazepam?
Elfazepam has molecular formula C19H18ClFN2O3S and molecular weight 408.87400 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Elfazepam (CAS 52042-01-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1326249-7 (accessed 2026-10-25).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.