Description

4-Bromo-5-Chloro-1H-Indazole is a high-purity halogenated indazole derivative, a crucial building block in modern organic synthesis. Its value lies in its versatile reactivity, serving as a key intermediate for constructing complex molecular architectures. This compound is primarily needed by pharmaceutical and agrochemical research & development teams for the synthesis of novel active ingredients, as well as by specialty chemical manufacturers producing advanced materials.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of kinase inhibitors, anticancer agents, and other biologically active heterocyclic compounds.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and pesticides, leveraging its halogenated indazole core.
• Material Science: Serves as a building block for organic electronic materials, such as OLED (Organic Light-Emitting Diode) emitters and charge transport materials.
• Chemical Biology: Employed as a molecular probe or a tag in medicinal chemistry for structure-activity relationship (SAR) studies.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for client-specific synthesis projects.

Basic Information

Product Name	4-Bromo-5-Chloro-1H-Indazole
CAS No.	1056264-74-4
Molecular Formula	C7H4BrClN2
Molecular Weight	247.48 g/mol
Synonyms	4-Bromo-5-chloro-1H-indazole; 1H-Indazole, 4-bromo-5-chloro-; 4-Bromo-5-chloroindazole; 5-Chloro-4-bromo-1H-indazole; 1056264-74-4
EINECS	Contact for details

Quality Control

Our 4-Bromo-5-Chloro-1H-Indazole is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure it meets the high standards required for research and synthesis. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment.

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 product is hygroscopic (moisture-sensitive) and must be kept under inert atmosphere or in a desiccator after opening to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC)	Conforms
Identification (NMR)	Conforms
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%

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