Description

1-sec-Butyl-5-Methyl-1H-Pyrazole-4-Sulfonyl Chloride is a specialized sulfonyl chloride derivative, a key reactive intermediate in modern synthetic chemistry. Its primary value lies in its role as a versatile building block for constructing more complex molecules, particularly in the development of active pharmaceutical ingredients (APIs) and agrochemicals. This compound is essential for research and production chemists in the pharmaceutical, agrochemical, and advanced materials sectors who require high-purity intermediates for coupling and functionalization reactions.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of novel drug candidates, particularly those containing sulfonamide or sulfonate ester functional groups for therapeutic applications.
• Agrochemical Synthesis: Used in the development of next-generation herbicides, fungicides, and insecticides, where the pyrazole-sulfonyl moiety contributes to biological activity.
• Functional Material Development: Serves as a key reagent for introducing sulfonyl groups into polymers or specialty chemicals to modify properties like solubility, stability, or reactivity.
• Chemical Research & Development: Employed in academic and industrial R&D labs for exploring new synthetic pathways and creating libraries of compounds for screening.
• Peptide Modification: Can be used for the selective modification of amino acid side chains in peptide chemistry to alter bioactivity or physicochemical properties.

Basic Information

Item	Details
Product Name	1-sec-Butyl-5-Methyl-1H-Pyrazole-4-Sulfonyl Chloride
CAS No.	1006454-09-6
Molecular Formula	C8H13ClN2O2S
Molecular Weight	236.72 g/mol
Synonyms	5-Methyl-1-(sec-butyl)-1H-pyrazole-4-sulfonyl chloride; 1-(1-Methylpropyl)-5-methyl-1H-pyrazole-4-sulfonyl chloride; 1-(sec-Butyl)-5-methyl-1H-pyrazole-4-sulfonyl chloride; sec-Butyl methyl pyrazole sulfonyl chloride; Pyrazole-4-sulfonyl chloride derivative
EINECS	Contact for details

Quality Control

Our production of 1-sec-Butyl-5-Methyl-1H-Pyrazole-4-Sulfonyl Chloride adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity assessment and NMR/IR for structural confirmation, to ensure consistency and reliability for sensitive synthetic applications. Certificates of Analysis (COA) detailing all specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (typically 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 decomposition. Keep away from strong acids and incompatible materials.

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.