5-methoxy-2-thioxo-2,3-dihydropyrimidin-4(1H)-one
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. 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-9581-8
- Molecular Formula
- C5H6N2O2S
- Molecular Weight
- 158.178 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 255-266ºC |
|---|---|
| Boiling Point | 348.4±45.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 164.5±28.7 °C |
| Exact Mass | 158.014999 |
| PSA | 94.04000 |
| LogP | -2.14 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.624 |
Customs & Trade Information
| HS Code | 2933599090 |
|---|---|
| Summary | 2933599090. other compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure. 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 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.
What are the upstream and downstream products of 5-methoxy-2-thioxo-2,3-dihydropyrimidin-4(1H)-one?
For 5-methoxy-2-thioxo-2,3-dihydropyrimidin-4(1H)-one, Upstream Products: Ethyl methoxyacetate; Downstream Products: 5-Methoxypyrimidine, 5-Methoxy-2,4-pyrimidinediol.
Data compiled from public chemical databases such as PubChem 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-9581-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.