4-Bromopyrazole
- CAS NO.：2075-45-8
- Empirical Formula: C3H3BrN2
- Molecular Weight: 146.97
- MDL number: MFCD00075602
- EINECS: 606-276-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:23:27
What is 4-Bromopyrazole?
Chemical properties
White to cream crystalline powder
The Uses of 4-Bromopyrazole
4-Bromopyrazole is a monosubstituted pyrazole compound used as a starting material for the synthesis of 1,4′-biazoles and the Suzuki reaction. It is also used as an inhibitor of human liver alcohol dehydrogenase and in mutagenicity studies in the Salmonella typhimurium L-arabinose resistance test.
What are the applications of Application
4-Bromopyrazole is a starting material employed in a synthesis of 1,4′-bipyrazoles
General Description
4-Bromopyrazole is a pyrazole derivative. It is reported to react with titanium tetrachloride to afford binary adducts. Mutagenicity of 4-bromopyrazole has been tested using the L-arabinose forward mutation assay of Salmonella typhimurium. It is reported to inhibit the oxidative phosphorylation, the ATP-32P exchange reaction, and energy dependent and independent calcium uptake.
Properties of 4-Bromopyrazole
| Melting point: | 93-96 °C (lit.) |
| Boiling point: | 250-260 °C (lit.) |
| Density | 1.5979 (rough estimate) |
| refractive index | 1.5260 (estimate) |
| storage temp. | Inert atmosphere,Room Temperature |
| solubility | Chloroform, DMSO, Methanol |
| pka | 12.71±0.50(Predicted) |
| form | Crystalline Powder |
| color | White to cream |
| Water Solubility | Slightly soluble in water. |
| CAS DataBase Reference | 2075-45-8(CAS DataBase Reference) |
| NIST Chemistry Reference | 1H-pyrazole, 4-bromo-(2075-45-8) |
Safety information for 4-Bromopyrazole
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 4-Bromopyrazole
| InChIKey | FHZALEJIENDROK-UHFFFAOYSA-N |
4-Bromopyrazole manufacturer
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SAKEM LLP
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product: 4-Bromo-1H-pyrazole 2075-45-8 98%
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