5-Bromouracil
Also known as: 5-Bromo-2,4(1H,3H)-pyrimidinedione, 5-Bromo-2,4-dihydroxypyrimidine, 5-Bromo-1H-pyrimidine-2,4-dione, 5-Bromo-2,3-dihydroxypyrimidine, 5-Bromo-2,4-(1H,3H)-pyrimidinedione, 5-Bromopyrimidine-2,4(1H,3H)-dione, 5-Bromopyrimidine-2,4-diol, 5-Bromo-uracil, 5-BrUra, Bromouracil, BROMOURACIL, 5-, Bromouracil,5, Uracil, 5-bromo-
5-Bromouracil (CAS 51-20-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H3BrN2O2 and a molecular weight of 190.98 g/mol. Key properties include a melting point of >300 °C(lit.), a boiling point of 384ºC and a density of 2.0±0.1 g/cm3. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 51-20-7
- Jingsj CID
- J-11407-8
- Molecular Formula
- C4H3BrN2O2
- Molecular Weight
- 190.98 g/mol
- Category
- Pharma Intermediates
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | >300 °C(lit.) |
|---|---|
| Boiling Point | 384ºC |
| Density | 2.0±0.1 g/cm3 |
| Exact Mass | 189.937775 |
| PSA | 65.72000 |
| LogP | -0.35 |
| Refractive Index | 1.590 |
| Additional Property | SOLUBLE IN COLD WATER |
GHS Safety & Compliance
- H302 — Harmful if swallowed
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-Bromouracil?
The CAS number of 5-Bromouracil is 51-20-7.
What are the molecular formula and molecular weight of 5-Bromouracil?
5-Bromouracil has molecular formula C4H3BrN2O2 and molecular weight 190.98 g/mol.
Is 5-Bromouracil hazardous?
5-Bromouracil has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
What are the upstream and downstream products of 5-Bromouracil?
For 5-Bromouracil, Upstream Products: Uracil, Cytosine, 5-Bromo-2,4-dimethoxypyrimidine; Downstream Products: 5-((2-Hydroxyethyl)amino)pyrimidine-2,4(1H,3H)-dione, Parabanic acid, 5-Bromopyrimidine-2,4,6(1H,3H,5H)-trione.
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-Bromouracil (CAS 51-20-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11407-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.