4-Oxo-1,4-dihydroquinazoline-6-carboxylic acid

Also known as: 1,4-Dihydro-4-oxoquinazoline-6-carboxylic acid, 4-Oxo-1,4-dihydro-6-quinazolinecarboxylic acid, 3,4-Dihydro-4-oxo-6-quinazolinecarboxylic acid, 4(3H)-Oxoquinazoline-6-carboxylic acid, 4-Oxo-3,4-dihydroquinazoline-6-carboxylic acid, 6-Quinazolinecarboxylic acid, 3,4-dihydro-4-oxo-, 4-Hydroxyquinazoline-6-carboxylic acid, 4-Oxo-1H-quinazoline-6-carboxylic acid

4-Oxo-1,4-dihydroquinazoline-6-carboxylic acid (CAS 33986-75-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H6N2O3 and a molecular weight of 190.156 g/mol. Key properties include a boiling point of 540.6±33.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 280.7±25.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 33986-75-3
Jingsj CID: J-47758-7
Molecular Formula: C₉H₆N₂O₃
Molecular Weight: 190.156 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	540.6±33.0 °C at 760 mmHg
Density	1.6±0.1 g/cm3
Flash Point	280.7±25.4 °C
Exact Mass	190.037842
PSA	83.05000
LogP	0.45
Vapor Pressure	0.0±1.5 mmHg at 25°C
Refractive Index	1.711

Frequently Asked Questions

What is the CAS number of 4-Oxo-1,4-dihydroquinazoline-6-carboxylic acid?

The CAS number of 4-Oxo-1,4-dihydroquinazoline-6-carboxylic acid is 33986-75-3.

What are the molecular formula and molecular weight of 4-Oxo-1,4-dihydroquinazoline-6-carboxylic acid?

4-Oxo-1,4-dihydroquinazoline-6-carboxylic acid has molecular formula C9H6N2O3 and molecular weight 190.156 g/mol.

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. "4-Oxo-1,4-dihydroquinazoline-6-carboxylic acid (CAS 33986-75-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47758-7 (accessed 2026-11-09).

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