4-Bromopyrazole, 99%

Name: 4-Bromopyrazole, 99%
Brand: Vaqora Chemicals
SKU: VQ-012572

About 4-Bromopyrazole, 99%

4-Bromopyrazole (CAS 2075-45-8) is a five-membered N-heterocycle offered by Vaqora Chemicals with a typical assay of 99%. Formula C3H3BrN2, molecular weight 146.97 g/mol. Its systematic (IUPAC) name is 4-bromo-1H-pyrazole. Alternative names: 1H-Pyrazole, 4-bromo- and 4-Brompyrazole.

It is supplied as white to almost white powder or crystals or chunks. Literature values give a melting point of 93-96 °C. Store in a tightly closed container in a cool, dry and well-ventilated place. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

Key uses span organic synthesis and API synthesis. It is used across pharmaceutical manufacturing and academic and industrial research.

We offer 4-Bromopyrazole in 5 g, 25 g, 100 g and 1 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	4-Bromopyrazole, 99%
Catalogue No.	VQ-012572
CAS Number	2075-45-8
IUPAC name	4-bromo-1H-pyrazole
Molecular formula	C₃H₃BrN₂
Molecular weight	146.97 g/mol
Exact mass	145.948
Purity / assay	99%
HSN code	29399900
InChIKey	WVGCPEDBFHEHEZ-UHFFFAOYSA-N
SMILES	C1=C(C=NN1)Br
PubChem CID	16375

Physical properties
Physical form	Crystalline
Appearance	White to almost white powder or crystals or chunks
Melting point	93-96 °C
LogP (XLogP3)	0.3
H-bond donors / acceptors	1 / 1
TPSA	28.7 Å²
Synonyms	1H-Pyrazole, 4-bromo-, 4-Brompyrazole, 4-bromo-pyrazole, 4-Bromopyrazole, 99%, 5-23-04-00172 (Beilstein Handbook Reference), 4-Bromopyrazole, 4-bromo pyrazole, 4-Bromo-1-H-pyrazole

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of 4-Bromopyrazole, 99%?

The CAS Registry Number of 4-Bromopyrazole, 99% is 2075-45-8. It is also known as 1H-Pyrazole, 4-bromo-, 4-Brompyrazole, 4-bromo-pyrazole.

What is the molecular formula and molecular weight of 4-Bromopyrazole, 99%?

4-Bromopyrazole, 99% has the molecular formula C3H3BrN2 and a molecular weight of 146.97 g/mol. Its IUPAC name is 4-bromo-1H-pyrazole.

Which grade and pack sizes of 4-Bromopyrazole, 99% can I order?

We supply 4-Bromopyrazole, 99% in (99%) grade, in 5 g, 25 g, 100 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 4-Bromopyrazole, 99%?

Yes. Every lot of 4-Bromopyrazole, 99% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 4-Bromopyrazole, 99% be shipped internationally?

Yes. 4-Bromopyrazole, 99% is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.