Description

1-(tert-Butyl)-5-Methyl-1H-Pyrazole-3-Carbonyl Chloride is a high-purity, reactive chemical intermediate essential for advanced organic synthesis. This compound matters as a key building block for constructing complex heterocyclic molecules, enabling the development of novel active ingredients. It is primarily needed by research and development chemists in the pharmaceutical and agrochemical industries for creating new drug candidates and crop protection agents.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds with pyrazole-based scaffolds.
• Agrochemical Synthesis: Used in the development of next-generation herbicides, fungicides, and insecticides, leveraging its heterocyclic structure.
• Material Science Research: Serves as a monomer or functionalization agent in the creation of specialized polymers and advanced organic materials.
• Ligand and Catalyst Development: Employed to synthesize novel chelating ligands and organocatalysts for asymmetric synthesis and metal complexation.
• Custom Synthesis and Contract Manufacturing: A vital reagent for fine chemical manufacturers offering bespoke synthesis services to the life sciences sector.

Basic Information

Product Name	1-(tert-Butyl)-5-Methyl-1H-Pyrazole-3-Carbonyl Chloride
CAS No.	306936-94-7
Molecular Formula	C9H13ClN2O
Molecular Weight	200.67 g/mol
Synonyms	5-Methyl-1-(tert-butyl)-1H-pyrazole-3-carbonyl chloride; 1-tert-Butyl-5-methyl-1H-pyrazole-3-carbonyl chloride; 1H-Pyrazole-3-carbonyl chloride, 1-(1,1-dimethylethyl)-5-methyl-; 1-(tert-Butyl)-5-methylpyrazole-3-carbonyl chloride; 3-Carbamoyl-1-tert-butyl-5-methylpyrazole chloride; 1-(1,1-Dimethylethyl)-5-methyl-1H-pyrazole-3-carbonyl chloride
EINECS	Contact for details

Quality Control

Our 1-(tert-Butyl)-5-Methyl-1H-Pyrazole-3-Carbonyl Chloride is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. Certificates of Analysis (COA) with detailed specifications are provided for each lot to support your quality assurance and regulatory needs.

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). 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	White to off-white crystalline powder or solid
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.