Description

4-Bromo-3-Ethyl-1-Methyl-1H-Pyrazole is a versatile brominated pyrazole derivative, a crucial building block in advanced organic synthesis. Its value lies in providing a reactive halogen site and a stable heterocyclic core, enabling the construction of complex molecules with high precision. This intermediate is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, particularly for developing active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key synthon for the development of novel active pharmaceutical ingredients (APIs), especially in kinase inhibitor and anti-inflammatory drug research.
• Agrochemical Synthesis: Used in the production of modern pesticides, herbicides, and fungicides, leveraging its pyrazole scaffold for biological activity.
• Ligand and Catalyst Development: Serves as a precursor for N-heterocyclic carbene (NHC) ligands and other organometallic catalysts used in cross-coupling reactions.
• Material Science Research: Building block for creating functional organic materials, such as liquid crystals or organic light-emitting diodes (OLEDs).
• Custom Synthesis and R&D: A valuable starting material for contract research organizations (CROs) and fine chemical companies engaged in custom synthesis projects.

Basic Information

Product Name	4-Bromo-3-Ethyl-1-Methyl-1H-Pyrazole
CAS No.	61592-32-3
Molecular Formula	C6H9BrN2
Molecular Weight	189.06 g/mol
Synonyms	4-Bromo-3-ethyl-1-methylpyrazole; 1-Methyl-3-ethyl-4-bromopyrazole; 4-Bromo-3-ethyl-1-methyl-1H-pyrazole; 3-Ethyl-1-methyl-4-bromopyrazole; 4-Bromo-3-ethyl-1-methylpyrazole; 1H-Pyrazole, 4-bromo-3-ethyl-1-methyl-; 61592-32-3 (CAS)
EINECS	Contact for details

Quality Control

Our 4-Bromo-3-Ethyl-1-Methyl-1H-Pyrazole is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and GC-MS, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all specifications and test results to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive); keep the container tightly sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.