3-Hydroxyisoquinoline
Also known as: 2,3-dihydroisoquinolin-3-one, 3(2H)-Isoquinolinone, 3-ISOQUINOLINOL, Isoquinolin-3-ol, Isoquinolin-3(2H)-one, 3-Hydroxy-2-azanaphthalene
3-Hydroxyisoquinoline (CAS 7651-81-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H7NO and a molecular weight of 145.158 g/mol. Key properties include a melting point of 192-194 °C(lit.), a boiling point of 406.3±18.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 199.5±21.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 7651-81-2
- Jingsj CID
- J-926343-8
- Molecular Formula
- C9H7NO
- Molecular Weight
- 145.158 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 192-194 °C(lit.) |
|---|---|
| Boiling Point | 406.3±18.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 199.5±21.2 °C |
| Exact Mass | 145.052765 |
| PSA | 33.12000 |
| LogP | 0.59 |
| Vapor Pressure | 0.0±1.0 mmHg at 25°C |
| Refractive Index | 1.691 |
Customs & Trade Information
| HS Code | 2933499090 |
|---|---|
| Summary | 2933499090. other compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 3-Hydroxyisoquinoline?
The CAS number of 3-Hydroxyisoquinoline is 7651-81-2.
What are the molecular formula and molecular weight of 3-Hydroxyisoquinoline?
3-Hydroxyisoquinoline has molecular formula C9H7NO and molecular weight 145.158 g/mol.
What are the upstream and downstream products of 3-Hydroxyisoquinoline?
For 3-Hydroxyisoquinoline, Upstream Products: 1-Phenyl-1,2-dihydroisoquinolin-3(4H)-one, 3-Aminoisoquinoline, 3-Hydroxyisoquinoline; Downstream Products: 3-Hydroxyisoquinoline, 1,4-Dihydro-3(2H)-isoquinolinone, 3-Methoxyisoquinoline-1-carboxylic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Hydroxyisoquinoline (CAS 7651-81-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-926343-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.