1-Acetylindolin-2-one
Also known as: 1-Acetyloxindole, N-Acetyl-2-oxindole, 1-Acetyl-1,3-dihydro-2H-indol-2-one, 1-acetyl-2-indolinone, 1-acetylindolin-2-one, N-Acetyloxindole, Nsc286428
1-Acetylindolin-2-one (CAS 21905-78-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H9NO2 and a molecular weight of 175.184 g/mol. Key properties include a melting point of 127-131ºC(lit.), a boiling point of 399.8±31.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 203.5±17.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 21905-78-2
- Jingsj CID
- J-1495170-3
- Molecular Formula
- C10H9NO2
- Molecular Weight
- 175.184 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 127-131ºC(lit.) |
|---|---|
| Boiling Point | 399.8±31.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 203.5±17.2 °C |
| Exact Mass | 175.063324 |
| PSA | 37.38000 |
| LogP | 0.86 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.596 |
Frequently Asked Questions
What is the CAS number of 1-Acetylindolin-2-one?
The CAS number of 1-Acetylindolin-2-one is 21905-78-2.
What are the molecular formula and molecular weight of 1-Acetylindolin-2-one?
1-Acetylindolin-2-one has molecular formula C10H9NO2 and molecular weight 175.184 g/mol.
What are the upstream and downstream products of 1-Acetylindolin-2-one?
For 1-Acetylindolin-2-one, Upstream Products: Oxindole, 1-Acetyl-1H-indole-2,3-dione, 1-Acetylindole; Downstream Products: 3,3-Dimethylindolin-2-one, 2-Oxoindoline-3-carbaldehyde, 3,3-Dimethylindoline.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Acetylindolin-2-one (CAS 21905-78-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1495170-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.