5-methoxy-2-thioxo-2,3-dihydropyrimidin-4(1H)-one

5-甲氧基-2-巯基-4-嘧啶醇

Also known as: 5-Methoxy-2-sulfanyl-4-pyrimidinol, 5-Methoxy-2-sulfanylpyrimidin-4-ol, 2-Mercapto-5-methoxypyrimidin-4-ol, 5-Methoxy-2-thiouracil, 2-Mercapto-4-hydroxy-5-methoxypyrimidine, 4(1H)-Pyrimidinone, 2,3-dihydro-5-methoxy-2-thioxo-, 5-methoxy-2-sulfanylidene-1H-pyrimidin-4-one, MFCD00094470

5-methoxy-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (CAS 6939-11-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H6N2O2S and a molecular weight of 158.178 g/mol. It is also known as 5-Methoxy-2-sulfanyl-4-pyrimidinol, 5-Methoxy-2-sulfanylpyrimidin-4-ol and 2-Mercapto-5-methoxypyrimidin-4-ol. Key properties include a melting point of 255-266ºC, a boiling point of 348.4±45.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 164.5±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
6939-11-3
Jingsj CID
J-9581-3
Molecular Formula
C5H6N2O2S
Chinese Name
5-甲氧基-2-巯基-4-嘧啶醇
Molecular Weight
158.178 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point255-266ºC
Boiling Point348.4±45.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point164.5±28.7 °C

Frequently Asked Questions

What is the CAS number of 5-methoxy-2-thioxo-2,3-dihydropyrimidin-4(1H)-one?

The CAS number of 5-methoxy-2-thioxo-2,3-dihydropyrimidin-4(1H)-one is 6939-11-3.

What are the molecular formula and molecular weight of 5-methoxy-2-thioxo-2,3-dihydropyrimidin-4(1H)-one?

5-methoxy-2-thioxo-2,3-dihydropyrimidin-4(1H)-one has molecular formula C5H6N2O2S and molecular weight 158.178 g/mol.

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

Last updated:

How to cite: Jingsj. "5-methoxy-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (CAS 6939-11-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-9581-3 (accessed 2026-10-22).

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