Description

1H-Pyrazole-5-Carbonyl Chloride, 1,3,4-Trimethyl- (9Ci) is a high-purity, reactive organic intermediate used in advanced chemical synthesis. This compound is valued for its role as a key building block in the development of complex molecules, particularly in pharmaceutical and agrochemical research. It is essential for chemists and R&D teams in the fine chemical, life sciences, and material science industries who require a reliable and high-quality source for constructing pyrazole-based derivatives.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of active pharmaceutical ingredients (APIs), especially for compounds targeting neurological and metabolic disorders.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and insecticides with pyrazole cores.
• Ligand and Catalyst Development: Serves as a starting material for creating specialized ligands used in catalytic systems and metal-organic frameworks (MOFs).
• Material Science Research: Employed in the synthesis of advanced polymers and functional materials with specific thermal or optical properties.
• Custom Synthesis & Contract Manufacturing: A vital reagent for CDMOs (Contract Development and Manufacturing Organizations) producing bespoke compounds for client projects.
• Academic & Industrial R&D: Used in research laboratories for methodological development and exploring new chemical spaces in heterocyclic chemistry.

Basic Information

Product Name	1H-Pyrazole-5-Carbonyl Chloride, 1,3,4-Trimethyl- (9Ci)
CAS No.	330937-69-4
Molecular Formula	C7H9ClN2O
Molecular Weight	172.61 g/mol
Synonyms	1,3,4-Trimethyl-1H-pyrazole-5-carbonyl chloride; 1,3,4-Trimethylpyrazole-5-carbonyl chloride; 5-(Chlorocarbonyl)-1,3,4-trimethyl-1H-pyrazole; 1,3,4-Trimethyl-1H-pyrazole-5-carboxylic acid chloride; 330937-69-4; 1,3,4-Trimethylpyrazole-5-carboxylic acid chloride
EINECS	Contact for details

Quality Control

Every batch of 1H-Pyrazole-5-Carbonyl Chloride, 1,3,4-Trimethyl- (9Ci) undergoes rigorous analytical testing to ensure it meets the high-purity standards required for sensitive synthetic applications. Our quality assurance protocols include advanced chromatographic and spectroscopic methods to verify identity, potency, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee traceability and compliance with your internal quality requirements.

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). This product is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (e.g., nitrogen or argon) to prevent decomposition. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
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.