Description

1,5-Dimethyl-1H-Pyrazole-4-Sulfonyl Chloride is a versatile and highly reactive sulfonyl chloride derivative used as a key synthetic intermediate. Its primary value lies in its ability to act as a sulfonylation reagent, facilitating the introduction of the sulfonyl group into target molecules to modify their properties. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, particularly in the development of active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A critical building block in the synthesis of novel drug candidates, especially for creating sulfonamide-based active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the research and production of advanced herbicides, fungicides, and insecticides where the sulfonyl moiety is required for bioactivity.
• Chemical Research & Development: Serves as a versatile reagent in organic synthesis for constructing complex heterocyclic compounds and functional materials.
• Dye and Pigment Manufacturing: Employed in the synthesis of specialized dyes and pigments that incorporate sulfonyl groups for enhanced stability or color properties.
• Polymer Modification: Can be used to introduce sulfonyl chloride functionalities into polymer chains for subsequent cross-linking or to impart specific chemical characteristics.

Basic Information

Product Name	1,5-Dimethyl-1H-Pyrazole-4-Sulfonyl Chloride
CAS No.	1005613-94-4
Molecular Formula	C5H7ClN2O2S
Molecular Weight	194.64 g/mol
Synonyms	1,5-Dimethyl-4-sulfonylchloride-1H-pyrazole; 1H-Pyrazole-4-sulfonyl chloride, 1,5-dimethyl-; 4-(Chlorosulfonyl)-1,5-dimethyl-1H-pyrazole; 1,5-Dimethylpyrazole-4-sulfonyl chloride; 1,5-Dimethyl-1H-pyrazole-4-sulfonyl chloride; Dimethylpyrazolesulfonyl chloride
EINECS	Contact for details

Quality Control

Our 1,5-Dimethyl-1H-Pyrazole-4-Sulfonyl Chloride is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. Certificates of Analysis (COA) documenting all critical parameters are available 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) for long-term storage to prevent degradation. Keep away from heat, open flames, and incompatible materials such as 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.