Description

1-Methyl-5-T-Butylpyrazole CAS NO 141665-17-0 is a specialized pyrazole derivative characterized by its sterically hindered tert-butyl group, which imparts unique chemical stability and reactivity. This compound serves as a versatile and high-value chemical intermediate and ligand precursor in advanced organic synthesis. It is primarily sought after by R&D and production teams in the pharmaceutical, agrochemical, and fine chemical industries for developing novel active ingredients and catalysts.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and inflammation.
• Agrochemical Synthesis: Used in the development of advanced pesticides and herbicides, where the pyrazole core contributes to biological activity.
• Catalyst Ligand: Acts as a precursor for nitrogen-donor ligands in transition metal catalysis, enabling cross-coupling and other valuable synthetic transformations.
• Fine Chemical Production: Employed in the manufacture of specialty chemicals, dyes, and functional materials requiring specific heterocyclic architectures.
• Research & Development: A valuable tool for medicinal and process chemists in academia and industry for exploring new chemical spaces and reaction methodologies.

Basic Information

Item	Details
Product Name	1-Methyl-5-T-Butylpyrazole
CAS No.	141665-17-0
Molecular Formula	C8H14N2
Molecular Weight	138.21 g/mol
Synonyms	1-Methyl-5-tert-butylpyrazole; 5-tert-Butyl-1-methylpyrazole; 5-(tert-Butyl)-1-methyl-1H-pyrazole; 1-Methyl-5-(1,1-dimethylethyl)pyrazole; 1-Methyl-5-(tert-butyl)pyrazole; tert-Butylmethylpyrazole; Pyrazole, 1-methyl-5-(1,1-dimethylethyl)-
EINECS	Contact for details

Quality Control

Our 1-Methyl-5-T-Butylpyrazole is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC, GC, and NMR, to ensure identity, purity, and consistency. We provide full traceability and Certificates of Analysis (COA) are available upon request, confirming compliance with your specified standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%

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