Description

1H-Pyrazole-4-Carbonyl Chloride, 3-Methoxy-1-Methyl- (9Ci) is a versatile and highly reactive organic intermediate, specifically an acyl chloride derivative of a substituted pyrazole. Its core value proposition lies in its role as a key building block for the synthesis of more complex molecules, enabling the introduction of the 1H-pyrazole-4-carbonyl moiety into target structures. This compound is primarily needed by research chemists and process development scientists in the pharmaceutical and agrochemical industries for creating novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A critical building block for the synthesis of novel drug candidates, particularly in medicinal chemistry programs targeting various therapeutic areas.
• Agrochemical Synthesis: Used in the research and development of new pesticides, herbicides, and fungicides, where the pyrazole core is a common bioactive scaffold.
• Chemical Research & Development: Serves as a versatile reagent in organic synthesis for constructing heterocyclic compounds and introducing amide linkages via reactions with amines.
• Material Science Precursor: Potential use in the synthesis of specialized polymers or ligands for catalysts and advanced materials.
• Custom Synthesis & Contract Manufacturing: Employed by CDMOs (Contract Development and Manufacturing Organizations) for the production of client-specific target molecules on laboratory to pilot scale.

Basic Information

Product Name	1H-Pyrazole-4-Carbonyl Chloride, 3-Methoxy-1-Methyl- (9Ci)
CAS No.	332070-70-9
Molecular Formula	C6H7ClN2O2
Molecular Weight	174.59 g/mol
Synonyms	3-Methoxy-1-methyl-1H-pyrazole-4-carbonyl chloride; 1-Methyl-3-methoxy-1H-pyrazole-4-carbonyl chloride; 3-Methoxy-1-methylpyrazole-4-carbonyl chloride; 1H-Pyrazole-4-carbonyl chloride, 3-methoxy-1-methyl-; 4-(Chlorocarbonyl)-3-methoxy-1-methyl-1H-pyrazole
EINECS	Contact for details

Quality Control

Our 1H-Pyrazole-4-Carbonyl Chloride, 3-Methoxy-1-Methyl- (9Ci) is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements for advanced synthetic intermediates. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available for every shipment upon request.

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 and reactivity as a strong acid/organic solvent derivative, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation from moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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