3-Hydroxy-2-phenylquinolin-4(1H)-one

Also known as: 3-Hydroxy-2-phenyl-4(1H)-quinolinone, 3-Hydroxy-2-phenyl-1H-quinolin-4-one, 3-Hydroxy-2-phenyl-1,4-dihydroquinolin-4-one, 4(1H)-Quinolinone, 3-hydroxy-2-phenyl-, 2-phenyl-3-hydroxy-4(1H)-quinolinone, 2-phenyl-3-hydroxy-quinolin-4(1H)-one

3-Hydroxy-2-phenylquinolin-4(1H)-one (CAS 31588-18-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C15H11NO2 and a molecular weight of 237.25300 g/mol. Key properties include a melting point of 268-270ºC, a boiling point of 411.8ºC at 760mmHg, a density of 1.323g/cm3 and a flash point of 202.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 31588-18-8
Jingsj CID: J-1178260-8
Molecular Formula: C₁₅H₁₁NO₂
Molecular Weight: 237.25300 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	268-270ºC
Boiling Point	411.8ºC at 760mmHg
Density	1.323g/cm3
Flash Point	202.8ºC
Exact Mass	237.07900
PSA	53.09000
LogP	2.90070
Refractive Index	1.677

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-Hydroxy-2-phenylquinolin-4(1H)-one?

The CAS number of 3-Hydroxy-2-phenylquinolin-4(1H)-one is 31588-18-8.

What are the molecular formula and molecular weight of 3-Hydroxy-2-phenylquinolin-4(1H)-one?

3-Hydroxy-2-phenylquinolin-4(1H)-one has molecular formula C15H11NO2 and molecular weight 237.25300 g/mol.

What are the upstream and downstream products of 3-Hydroxy-2-phenylquinolin-4(1H)-one?

For 3-Hydroxy-2-phenylquinolin-4(1H)-one, Upstream Products: 2-oxo-2-phenylethyl 2-aminobenzoate, 2-Chloroacetophenone, 2-Formamidobenzoic acid; Downstream Products: 2-(Benzoylamino)benzoic acid, Bentranil, benzoic acid.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "3-Hydroxy-2-phenylquinolin-4(1H)-one (CAS 31588-18-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1178260-8 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.