3-(4-ethoxyphenyl)-2-thioxo-2,3-dihydro-4(1H)-quinazolinone

Also known as: 3-(4-ethoxyphenyl)-2-sulfanyl-3,4-dihydroquinazolin-4-one, 3-(4-ethoxyphenyl)-2-thioxo-2,3-dihydroquinazolin-4(1H)-one, 3-(4-ethoxyphenyl)-2-sulfanylidene-1H-quinazolin-4-one, 4(1H)-quinazolinone, 3-(4-ethoxyphenyl)-2,3-dihydro-2-thioxo-, 3-(4-ethoxyphenyl)-2-thioxo-1H-quinazolin-4-one, 3-(4-ethoxyphenyl)-2-mercapto-3H-quinazolin-4-one

3-(4-ethoxyphenyl)-2-thioxo-2,3-dihydro-4(1H)-quinazolinone (CAS 1035-51-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C16H14N2O2S and a molecular weight of 298.36000 g/mol. Key properties include a melting point of >250ºC, a boiling point of 475.2ºC at 760 mmHg, a density of 1.36g/cm3 and a flash point of 241.2ºC. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.: 1035-51-4
Jingsj CID: J-63275-7
Molecular Formula: C₁₆H₁₄N₂O₂S
Molecular Weight: 298.36000 g/mol
Category: Ketones
Last updated: 11/3/2026

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Physicochemical Properties

Melting Point	>250ºC
Boiling Point	475.2ºC at 760 mmHg
Density	1.36g/cm3
Flash Point	241.2ºC
Exact Mass	298.07800
PSA	79.11000
LogP	3.44700
Vapor Pressure	3.4E-09mmHg at 25°C
Refractive Index	1.698

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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-(4-ethoxyphenyl)-2-thioxo-2,3-dihydro-4(1H)-quinazolinone?

The CAS number of 3-(4-ethoxyphenyl)-2-thioxo-2,3-dihydro-4(1H)-quinazolinone is 1035-51-4.

What are the molecular formula and molecular weight of 3-(4-ethoxyphenyl)-2-thioxo-2,3-dihydro-4(1H)-quinazolinone?

3-(4-ethoxyphenyl)-2-thioxo-2,3-dihydro-4(1H)-quinazolinone has molecular formula C16H14N2O2S and molecular weight 298.36000 g/mol.

What are the upstream and downstream products of 3-(4-ethoxyphenyl)-2-thioxo-2,3-dihydro-4(1H)-quinazolinone?

For 3-(4-ethoxyphenyl)-2-thioxo-2,3-dihydro-4(1H)-quinazolinone, Upstream Products: 4-Ethoxyphenyl isothiocyanate.

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

Last updated: 11/3/2026

How to cite: Jingsj. "3-(4-ethoxyphenyl)-2-thioxo-2,3-dihydro-4(1H)-quinazolinone (CAS 1035-51-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-63275-7 (accessed 2026-11-09).

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