Description

1H-Pyrazole-3,5-Dicarbonyl Dichloride, 1-Methyl- (9Ci) is a high-purity, reactive chemical intermediate primarily used in advanced organic synthesis. This compound matters as a versatile building block for constructing complex heterocyclic frameworks, particularly in pharmaceutical and agrochemical research. It is essential for chemists and process developers in the fine chemical, pharmaceutical, and life science industries who require a reliable source of this specialized reagent for creating novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel pyrazole-based drug candidates, including kinase inhibitors and anti-inflammatory agents.
• Agrochemical Synthesis: Used in the development of advanced pesticides and herbicides, leveraging the pyrazole core for biological activity.
• Ligand and Catalyst Development: Serves as a starting material for creating specialized chelating ligands and organocatalysts used in asymmetric synthesis.
• Polymer Chemistry: Acts as a monomer or cross-linking agent for producing high-performance polymers with specific thermal or chemical resistance.
• Material Science Research: Employed in the development of organic electronic materials, metal-organic frameworks (MOFs), and other functional materials.
• Custom Synthesis and Contract Manufacturing: A critical reagent for custom synthesis houses and CDMOs (Contract Development and Manufacturing Organizations) serving the biotech and pharmaceutical sectors.

Basic Information

Product Name	1H-Pyrazole-3,5-Dicarbonyl Dichloride, 1-Methyl- (9Ci)
CAS No.	90421-57-1
Molecular Formula	C7H4Cl2N2O2
Molecular Weight	219.03 g/mol
Synonyms	1-Methyl-1H-pyrazole-3,5-dicarbonyl dichloride; 1-Methylpyrazole-3,5-dicarboxylic Acid Dichloride; 3,5-Dicarboxy-1-methylpyrazole Dichloride; 1-Methyl-1H-pyrazole-3,5-dicarboxylic acid chloride; 90421-57-1; 1-Methylpyrazole-3,5-dicarbonyl Dichloride
EINECS	Contact for details

Quality Control

Our 1H-Pyrazole-3,5-Dicarbonyl Dichloride, 1-Methyl- (9Ci) is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure high purity and batch-to-batch consistency suitable for research and scale-up. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). This material 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 and organic solvents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
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.