Description

1H-Pyrazole-3,4-Dicarbonyldichloride(9Ci) is a versatile heterocyclic acid chloride building block, essential for the synthesis of complex organic molecules. Its high reactivity as a bifunctional acylating agent makes it a critical intermediate for creating novel compounds with tailored properties. This product is primarily needed by research and development chemists in the pharmaceutical and agrochemical industries, as well as by manufacturers of advanced materials and specialty dyes.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of active pharmaceutical ingredients (APIs), particularly in the development of kinase inhibitors and other heterocyclic drug candidates.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and pesticides, leveraging its pyrazole core structure.
• Polymer & Material Science: Serves as a monomer or cross-linking agent for creating high-performance polymers, resins, and functional materials.
• Organic Synthesis Reagent: A versatile reagent for introducing the pyrazole dicarboxamide or dicarboxylate moiety into target molecules via amidation or esterification reactions.
• Dye & Pigment Manufacturing: Intermediate in the synthesis of complex organic dyes and pigments, especially azo dyes and colorants for electronics.
• Research & Development: A valuable tool compound for medicinal chemistry, chemical biology, and material science research in academic and industrial laboratories.

Basic Information

Product Name	1H-Pyrazole-3,4-Dicarbonyldichloride(9Ci)
CAS No.	35344-96-8
Molecular Formula	C5H2Cl2N2O2
Molecular Weight	192.99 g/mol
Synonyms	3,4-Pyrazoledicarboxylic Acid Dichloride; 1H-Pyrazole-3,4-dicarbonyl Dichloride; Pyrazole-3,4-dicarboxylic Acid Chloride; 3,4-Dicarboxypyrazole Dichloride; 1H-Pyrazole-3,4-dicarboxylic Acid Dichloride; 3,4-Pyrazoledicarbonyl Chloride; 1H-Pyrazole-3,4-dicarboxylic Acid Chloride; 3,4-Dichlorocarbonyl-1H-pyrazole
EINECS	Contact for details

Quality Control

Our 1H-Pyrazole-3,4-Dicarbonyldichloride(9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements for research and industrial synthesis. Certificates of Analysis (COA) with detailed specifications from HPLC, NMR, and IR are available upon request to support your quality assurance protocols.

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) and should be handled under an inert atmosphere (e.g., nitrogen or argon) to prevent decomposition. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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