5-Methoxy-2,4-pyrimidinediol
Also known as: 5-Methoxyuracil, 2,4-Dihydroxy-5-methoxypyrimidine, 5-Methoxypyrimidine-2,4(1H,3H)-dione, 5-Methoxy-1H-pyrimidine-2,4-dione, 5-Methoxy-2,4(1H,3H)-pyrimidinedione, Fluorouracil EP Impurity D, NSC 55452, mo5Ura
5-Methoxy-2,4-pyrimidinediol (CAS 6623-81-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H6N2O3 and a molecular weight of 142.113 g/mol. Key properties include a melting point of 344 °C, a boiling point of 508.5ºC at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 207.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 6623-81-0
- Jingsj CID
- J-12703-7
- Molecular Formula
- C5H6N2O3
- Molecular Weight
- 142.113 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 344 °C |
|---|---|
| Boiling Point | 508.5ºC at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 207.7ºC |
| Exact Mass | 142.037842 |
| PSA | 74.95000 |
| LogP | -0.70 |
| Refractive Index | 1.541 |
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-2,4-pyrimidinediol?
The CAS number of 5-Methoxy-2,4-pyrimidinediol is 6623-81-0.
What are the molecular formula and molecular weight of 5-Methoxy-2,4-pyrimidinediol?
5-Methoxy-2,4-pyrimidinediol has molecular formula C5H6N2O3 and molecular weight 142.113 g/mol.
What are the upstream and downstream products of 5-Methoxy-2,4-pyrimidinediol?
For 5-Methoxy-2,4-pyrimidinediol, Upstream Products: 5-methoxy-2-thioxo-2,3-dihydropyrimidin-4(1H)-one, Methyl methoxyacetate, Urea; Downstream Products: 2-Chloro-5-methoxypyrimidine, 2,4-Dichloro-5-methoxypyrimidine.
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-2,4-pyrimidinediol (CAS 6623-81-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-12703-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.