5-Hydroxyindolin-2-one
Also known as: 5-HYDROXYOXINDOLE, 5-Hydroxy-2-oxindole, 5-Hydroxy-2-indolinone, 5-Hydroxy-2-indolone, 5-Hydroxy-1,3-dihydro-2H-indol-2-one, 1,3-Dihydro-5-hydroxy-2H-indol-2-one, 2,3-Dihydro-5-hydroxyindol-2-one, 5-Hydroxyindolin-2-one, MFCD00014566, EINECS 222-309-1
5-Hydroxyindolin-2-one (CAS 3416-18-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H7NO2 and a molecular weight of 149.147 g/mol. Key properties include a melting point of 156-157 °C, a boiling point of 419.9±45.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 207.7±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3416-18-0
- Jingsj CID
- J-1956942-7
- Molecular Formula
- C8H7NO2
- Molecular Weight
- 149.147 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 156-157 °C |
|---|---|
| Boiling Point | 419.9±45.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 207.7±28.7 °C |
| Exact Mass | 149.047684 |
| PSA | 49.33000 |
| LogP | 0.41 |
| Vapor Pressure | 0.0±1.0 mmHg at 25°C |
| Refractive Index | 1.634 |
Activity & Biological Data
| Target | DPPH[1] |
|---|---|
| Additional Information | [1]. Daisuke Yasuda, et al. Preparation and antioxidant/pro-oxidant activities of 3-monosubstituted 5-hydroxyoxindole derivatives. |
Customs & Trade Information
| HS Code | 2933790090 |
|---|---|
| Summary | 2933790090. other lactams. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:9.0%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 5-Hydroxyindolin-2-one?
The CAS number of 5-Hydroxyindolin-2-one is 3416-18-0.
What are the molecular formula and molecular weight of 5-Hydroxyindolin-2-one?
5-Hydroxyindolin-2-one has molecular formula C8H7NO2 and molecular weight 149.147 g/mol.
What are the upstream and downstream products of 5-Hydroxyindolin-2-one?
For 5-Hydroxyindolin-2-one, Upstream Products: Oxindole, 5-Methoxyoxindole, 6-Methoxyoxindole; Downstream Products: 5-Methoxyoxindole.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "5-Hydroxyindolin-2-one (CAS 3416-18-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1956942-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.