Description

5-Methoxy-4-Nitro-2H-Pyrazole-3-Carbonyl Chloride is a high-value, reactive chemical intermediate essential for advanced organic synthesis. Its core value lies in its versatile carbonyl chloride functional group, which enables efficient amide bond formation and serves as a key building block for constructing complex heterocyclic scaffolds. This compound is primarily needed by research and development chemists and process engineers in the pharmaceutical and agrochemical industries for the synthesis of novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A critical building block for the synthesis of novel pyrazole-based drug candidates, including potential kinase inhibitors and anti-inflammatory agents.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides and herbicides, leveraging the pyrazole core for biological activity.
• Fine Chemical Production: Serves as a key precursor in the manufacture of complex dyes, pigments, and other specialty organic compounds.
• Material Science Research: Employed in the development of novel polymers and functional materials with specific electronic or photonic properties.
• Contract Research & Manufacturing (CRO/CMO): Supplied to organizations specializing in custom synthesis and scale-up services for client projects.

Basic Information

Product Name	5-Methoxy-4-Nitro-2H-Pyrazole-3-Carbonyl Chloride
CAS No.	1159988-54-1
Molecular Formula	C5H4ClN3O4
Molecular Weight	205.56 g/mol
Synonyms	5-Methoxy-4-nitro-1H-pyrazole-3-carbonyl chloride; 4-Nitro-5-methoxy-1H-pyrazole-3-carbonyl chloride; 1H-Pyrazole-3-carbonyl chloride, 5-methoxy-4-nitro-; 5-Methoxy-4-nitropyrazole-3-carbonyl chloride; 3-Carbonyl chloride-5-methoxy-4-nitropyrazole
EINECS	Contact for details

Quality Control

Our 5-Methoxy-4-Nitro-2H-Pyrazole-3-Carbonyl Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and FTIR, to ensure high purity and consistent performance. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation.

Specification

Item	Specification
Appearance	Off-white to light yellow 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.