4-Amino-2-mercaptopyrimidine
Also known as: 2(1H)-Pyrimidinethione, 4-amino-, 2(1H)-Pyrimidinone, 4-aminothio-, 2-Pyrimidinethiol, 4-amino-, 2-Thiocytosine, 4-Amino-2(1H)-pyrimidinethione, 4-Amino-2-thiopyrimidine, 4-Aminopyrimidine-2-thiol, 4-Aminopyrimidine-2-thione, 6-Amino-2-pyrimidinethione, Cytosine, 2-thio-, Cytosine, thio-, MFCD00057341, Thiocytosine
4-Amino-2-mercaptopyrimidine (CAS 333-49-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H5N3S and a molecular weight of 127.168 g/mol. Key properties include a melting point of 285-290 °C (dec.)(lit.), a boiling point of 347.7±34.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 164.1±25.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 333-49-3
- Jingsj CID
- J-23716-1
- Molecular Formula
- C4H5N3S
- Molecular Weight
- 127.168 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 285-290 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 347.7±34.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 164.1±25.7 °C |
| Exact Mass | 127.020416 |
| PSA | 90.60000 |
| LogP | -2.39 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.694 |
| Storage Conditions | -20?C Freezer |
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 4-Amino-2-mercaptopyrimidine?
The CAS number of 4-Amino-2-mercaptopyrimidine is 333-49-3.
What are the molecular formula and molecular weight of 4-Amino-2-mercaptopyrimidine?
4-Amino-2-mercaptopyrimidine has molecular formula C4H5N3S and molecular weight 127.168 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Amino-2-mercaptopyrimidine (CAS 333-49-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-23716-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.