2-(Methylthio)pyrimidin-4(3H)-one
Also known as: 2-Methylthio-4-pyrimidinol, 2-Methylthio-4-pyrimidone, 2-(Methylsulfanyl)pyrimidin-4(1H)-one, 2-(Methylsulfanyl)pyrimidin-4(3H)-one, 2-(Methylsulfanyl)pyrimidin-4-ol, 4(1H)-Pyrimidinone, 2-(methylthio)-, 4-Pyrimidinol, 2-(methylthio)-, 2-Methylthiopyrimidin-4-ol, 2-Methylsulfanyl-4-oxopyrimidine
2-(Methylthio)pyrimidin-4(3H)-one (CAS 5751-20-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H6N2OS and a molecular weight of 142.179 g/mol. Key properties include a melting point of 202 °C, a boiling point of 301.2ºC at 760mmHg and a density of 1.4±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 5751-20-2
- Jingsj CID
- J-854798-6
- Molecular Formula
- C5H6N2OS
- Molecular Weight
- 142.179 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 202 °C |
|---|---|
| Boiling Point | 301.2ºC at 760mmHg |
| Density | 1.4±0.1 g/cm3 |
| Exact Mass | 142.020081 |
| PSA | 71.05000 |
| LogP | 0.26 |
| Refractive Index | 1.639 |
| Storage Conditions | 2~8℃ |
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 2-(Methylthio)pyrimidin-4(3H)-one?
The CAS number of 2-(Methylthio)pyrimidin-4(3H)-one is 5751-20-2.
What are the molecular formula and molecular weight of 2-(Methylthio)pyrimidin-4(3H)-one?
2-(Methylthio)pyrimidin-4(3H)-one has molecular formula C5H6N2OS and molecular weight 142.179 g/mol.
What are the upstream and downstream products of 2-(Methylthio)pyrimidin-4(3H)-one?
For 2-(Methylthio)pyrimidin-4(3H)-one, Upstream Products: 2-Thiouracil, iodomethane, Acetyl chloride; Downstream Products: 4-Chloro-2-(methylthio)pyrimidine, 4-Hydroxy-2-phenylpyrimidine, 4-(4-methoxyphenyl)-2-(methylthio)pyrimidine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-(Methylthio)pyrimidin-4(3H)-one (CAS 5751-20-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-854798-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.