1,3-Diphenyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione

1,3-二苯基-2-硫代二氢嘧啶-4,6(1H,5H)-二酮

Also known as: 1,3-Diphenyl-2-thiobarbituric acid, 1,3-Diphenyl-2-thioxo-2,5-dihydropyrimidine-4,6(1H,3H)-dione, 1,3-Diphenyl-2-thioxohexahydropyrimidine-4,6-dione, N,N-Diphenyl-2-thiobarbituric acid, DPTBA, AURORA KA-3426, IFLAB-BB F1386-0089, MFCD00552520

1,3-Diphenyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione (CAS 35221-12-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C16H12N2O2S and a molecular weight of 296.34400 g/mol. It is also known as 1,3-Diphenyl-2-thiobarbituric acid, 1,3-Diphenyl-2-thioxo-2,5-dihydropyrimidine-4,6(1H,3H)-dione and 1,3-Diphenyl-2-thioxohexahydropyrimidine-4,6-dione. Key properties include a melting point of 248ºC (dec.)(lit.), a boiling point of 428.6ºC at 760mmHg, a density of 1.41g/cm3 and a flash point of 213ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
35221-12-6
Jingsj CID
J-998-6
Molecular Formula
C16H12N2O2S
Chinese Name
1,3-二苯基-2-硫代二氢嘧啶-4,6(1H,5H)-二酮
Molecular Weight
296.34400 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point248ºC (dec.)(lit.)
Boiling Point428.6ºC at 760mmHg
Density1.41g/cm3
Flash Point213ºC

Frequently Asked Questions

What is the CAS number of 1,3-Diphenyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione?

The CAS number of 1,3-Diphenyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione is 35221-12-6.

What are the molecular formula and molecular weight of 1,3-Diphenyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione?

1,3-Diphenyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione has molecular formula C16H12N2O2S and molecular weight 296.34400 g/mol.

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

Last updated:

How to cite: Jingsj. "1,3-Diphenyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione (CAS 35221-12-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-998-6 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.