4-Bromo-1H-pyrazole, ≥98%, Thermo Scientific Chemicals

Product Code	Brand	Quantity
15421979	Thermo Scientific Alfa Aesar H64673.14	25 g
15431979	Thermo Scientific Alfa Aesar H64673.36	500 g
15441979	Thermo Scientific Alfa Aesar H64673.A1	1 kg

Description

4-Bromopyrazole may be used in the preparation of 4-bromo-1-(2-chloroethyl)-1H-pyrazole. It may be used as starting material in the synthesis of 1,4?-bipyrazoles. Also used in the synthesis of various pharmaceutical and biologically active compounds, including inhibitors. It is also shown to be one of the 4-substituted pyrazoles, being able to act as inhibitor of liver alcohol dehydrogenase.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
4-Bromopyrazole may be used in the preparation of 4-bromo-1-(2-chloroethyl)-1H-pyrazole. It may be used as starting material in the synthesis of 1,4′-bipyrazoles. Also used in the synthesis of various pharmaceutical and biologically active compounds, including inhibitors. It is also shown to be one of the 4-substituted pyrazoles, being able to act as inhibitor of liver alcohol dehydrogenase.

Solubility
Slightly soluble in water.

Notes
Store in cool, dry place in tightly closed container. With adequate ventilation. Store away from oxidizing agent.

Chemical Identifiers

• CAS: 2075-45-8
• Molecular Weight (g/mol): 146.98
• InChI Key: WVGCPEDBFHEHEZ-UHFFFAOYSA-N
• PubChem CID: 16375
• SMILES: BrC1=CNN=C1

• Molecular Formula: C3H3BrN2
• MDL Number: MFCD00075602
• Synonym: 4-bromopyrazole, 1h-pyrazole, 4-bromo, 4-brompyrazole, 4-bromo-pyrazole, pyrazole, 4-bromo, 4-bromo pyrazole, byz, zlchem 126, 1h-pyrazole,4-bromo, pubchem11041
• IUPAC Name: 4-bromo-1H-pyrazole

Specifications

• CAS: 2075-45-8
• Boiling Point: 250°C to 260°C (literature)
• MDL Number: MFCD00075602
• Synonym: 4-bromopyrazole, 1h-pyrazole, 4-bromo, 4-brompyrazole, 4-bromo-pyrazole, pyrazole, 4-bromo, 4-bromo pyrazole, byz, zlchem 126, 1h-pyrazole,4-bromo, pubchem11041
• InChI Key: WVGCPEDBFHEHEZ-UHFFFAOYSA-N
• IUPAC Name: 4-bromo-1H-pyrazole
• PubChem CID: 16375
• Percent Purity: ≥98%
• Chemical Name or Material: 4-Bromo-1H-pyrazole

• Melting Point: 93°C to 96°C (literature)
• Molecular Formula: C3H3BrN2
• Beilstein: 106510
• Solubility Information: Slightly soluble in water.
• SMILES: BrC1=CNN=C1
• Molecular Weight (g/mol): 146.98
• Formula Weight: 146.97
• Physical Form: Solid

Safety and Handling

GHS H Statement
H315-H319-H335
Causes skin irritation.
Causes serious eye irritation.
May cause respiratory irritation.

P261-P264b-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P332+P313-P362-P501c

H315-H319-H335

missing translation for 'rtecsNumber' : UQ6200000

missing translation for 'tsca' : No

Recommended Storage : Ambient temperatures

RUO – Research Use Only