5-Chlorouracil
5-氯尿嘧啶
Also known as: 5-Chloro-2,4-dihydroxypyrimidine, 5-Chloropyrimidine-2,4(1H,3H)-dione, 5-Chloro-2,4(1H,3H)-pyrimidinedione, Uracil, 5-chloro-, NSC 28172, 5-Chloro-1H-pyrimidine-2,4-dione, 5-chloro-2,4-dioxopyrimidine, 5-chloro-uracil, Fluorouracil Related Compound E, MFCD00006019
5-Chlorouracil (CAS 1820-81-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H3ClN2O2 and a molecular weight of 146.53 g/mol. It is also known as 5-Chloro-2,4-dihydroxypyrimidine, 5-Chloropyrimidine-2,4(1H,3H)-dione and 5-Chloro-2,4(1H,3H)-pyrimidinedione. Key properties include a melting point of >300 °C(lit.), a density of 1.6±0.1 g/cm3 and a flash point of 203.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1820-81-1
- Jingsj CID
- J-35716-2
- Molecular Formula
- C4H3ClN2O2
- Chinese Name
- 5-氯尿嘧啶
- Molecular Weight
- 146.53 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | >300 °C(lit.) |
|---|---|
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 203.9ºC |
Frequently Asked Questions
What is the CAS number of 5-Chlorouracil?
The CAS number of 5-Chlorouracil is 1820-81-1.
What are the molecular formula and molecular weight of 5-Chlorouracil?
5-Chlorouracil has molecular formula C4H3ClN2O2 and molecular weight 146.53 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "5-Chlorouracil (CAS 1820-81-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-35716-2 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.