1,2-benzisoxazol-3(2H)-one
1,2-苯并异噁唑-3(2H)-酮
Also known as: Benzo[d]isoxazol-3-ol, Benzo[d]isoxazol-3(2H)-one, 1,2-Benzisoxazol-3-ol, 1,2-Benzisoxazolin-3-one, 3-Hydroxy-1,2-benzisoxazole, 3-Hydroxybenzisoxazole, 1,2-Benzoxazol-3(2H)-one, 1,2-benzoxazol-3-ol, Buttpark 43\57-21, MFCD00125030
1,2-benzisoxazol-3(2H)-one (CAS 21725-69-9) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C7H5NO2 and a molecular weight of 135.120 g/mol. It is also known as Benzo[d]isoxazol-3-ol, Benzo[d]isoxazol-3(2H)-one and 1,2-Benzisoxazol-3-ol. Key properties include a melting point of 140-142ºC, a boiling point of 299.9±13.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 135.2±19.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 21725-69-9
- Jingsj CID
- J-1383557-2
- Molecular Formula
- C7H5NO2
- Chinese Name
- 1,2-苯并异噁唑-3(2H)-酮
- Molecular Weight
- 135.120 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 140-142ºC |
|---|---|
| Boiling Point | 299.9±13.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 135.2±19.8 °C |
Frequently Asked Questions
What is the CAS number of 1,2-benzisoxazol-3(2H)-one?
The CAS number of 1,2-benzisoxazol-3(2H)-one is 21725-69-9.
What are the molecular formula and molecular weight of 1,2-benzisoxazol-3(2H)-one?
1,2-benzisoxazol-3(2H)-one has molecular formula C7H5NO2 and molecular weight 135.120 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,2-benzisoxazol-3(2H)-one (CAS 21725-69-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1383557-2 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.