3-phenyl-2-sulfanylidene-1H-quinazolin-4-one

Also known as: 3-phenyl-2-thioxo-2,3-dihydro-4(1H)-quinazolinone, 3-phenyl-2-thioxo-2,3-dihydro-1H-quinazolin-4-one, 2-mercapto-3-phenyl-3H-quinazolin-4-one, 2-Thio-3-phenyl-1,3-dihydroquinazolin-4-one, 3-phenyl-4-oxo-2-thioxo-1,2,3,4-tetrahydroquinazoline, 4(1H)-Quinazolinone,2,3-dihydro-3-phenyl-2-thioxo-, Quinazolin-4-one, 1,3-dihydro-3-phenyl-2-thio-, TIMTEC-BB SBB000936, EINECS 242-550-6

3-phenyl-2-sulfanylidene-1H-quinazolin-4-one (CAS 18741-24-7) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C14H10N2OS and a molecular weight of 254.30700 g/mol. Key properties include a melting point of 313-314ºC, a boiling point of 414.8ºC at 760mmHg, a density of 1.4g/cm3 and a flash point of 204.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 18741-24-7
Jingsj CID: J-1494915-6
Molecular Formula: C₁₄H₁₀N₂OS
Molecular Weight: 254.30700 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	313-314ºC
Boiling Point	414.8ºC at 760mmHg
Density	1.4g/cm3
Flash Point	204.6ºC
Exact Mass	254.05100
PSA	69.88000
LogP	3.04830

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-phenyl-2-sulfanylidene-1H-quinazolin-4-one?

The CAS number of 3-phenyl-2-sulfanylidene-1H-quinazolin-4-one is 18741-24-7.

What are the molecular formula and molecular weight of 3-phenyl-2-sulfanylidene-1H-quinazolin-4-one?

3-phenyl-2-sulfanylidene-1H-quinazolin-4-one has molecular formula C14H10N2OS and molecular weight 254.30700 g/mol.

What are the upstream and downstream products of 3-phenyl-2-sulfanylidene-1H-quinazolin-4-one?

For 3-phenyl-2-sulfanylidene-1H-quinazolin-4-one, Upstream Products: Phenyl isothiocyanate, Methyl anthranilate, Isatoic anhydride; Downstream Products: 3-Phenyl-2,4(1H,3H)-quinazolinedione, 2-chloro-3-phenylquinazolin-4(3H)-one.

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-phenyl-2-sulfanylidene-1H-quinazolin-4-one (CAS 18741-24-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1494915-6 (accessed 2026-11-09).

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