5-hydroxyuracil
5-羟基尿嘧啶
Also known as: 2,4,5-Trihydroxypyrimidine, Isobarbituric acid, 2,4(1H,3H)-Pyrimidinedione, 5-hydroxy-, 5-Hydroxy-2,4(1H,3H)-pyrimidinedione, 5-Hydroxypyrimidine-2,4(1H,3H)-dione, Fluorouracil EP Impurity B, Fluorouracil Impurity B, MFCD00082987, EINECS 207-829-9
5-hydroxyuracil (CAS 496-76-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H4N2O3 and a molecular weight of 128.086 g/mol. It is also known as 2,4,5-Trihydroxypyrimidine, Isobarbituric acid and 2,4(1H,3H)-Pyrimidinedione, 5-hydroxy-. Key properties include a melting point of 300ºC, a boiling point of 534.5±53.0 °C at 760 mmHg, a density of 1.8±0.1 g/cm3 and a flash point of 277.0±30.9 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 496-76-4
- Jingsj CID
- J-1492473-0
- Molecular Formula
- C4H4N2O3
- Chinese Name
- 5-羟基尿嘧啶
- Molecular Weight
- 128.086 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 300ºC |
|---|---|
| Boiling Point | 534.5±53.0 °C at 760 mmHg |
| Density | 1.8±0.1 g/cm3 |
| Flash Point | 277.0±30.9 °C |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of 5-hydroxyuracil?
The CAS number of 5-hydroxyuracil is 496-76-4.
What are the molecular formula and molecular weight of 5-hydroxyuracil?
5-hydroxyuracil has molecular formula C4H4N2O3 and molecular weight 128.086 g/mol.
Is 5-hydroxyuracil hazardous?
5-hydroxyuracil has GHS signal word Warning.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "5-hydroxyuracil (CAS 496-76-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1492473-0 (accessed 2026-10-25).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.