Description

1H-Pyrazole-4-Carbonylchloride,4,5-Dihydro-1,3-Dimethyl-5-Thioxo-(9Ci) is a specialized heterocyclic building block of significant interest in advanced organic synthesis. Its core value lies in its reactive carbonyl chloride and thioxo functional groups, which enable the construction of complex molecular architectures. This high-purity intermediate is essential for research and development chemists in the pharmaceutical and agrochemical industries, particularly for creating novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting specific enzyme pathways.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides with unique modes of action.
• Ligand and Catalyst Development: Serves as a building block for creating complex chelating ligands and organocatalysts used in asymmetric synthesis.
• Material Science Research: Employed in the development of advanced polymers and functional organic materials with specific electronic or photonic properties.
• Chemical Biology Probes: Utilized to create molecular probes for studying biological processes and protein interactions.

Basic Information

Item	Details
Product Name	1H-Pyrazole-4-Carbonylchloride,4,5-Dihydro-1,3-Dimethyl-5-Thioxo-(9Ci)
CAS No.	145984-34-5
Molecular Formula	C7H9ClN2OS
Molecular Weight	188.67 g/mol
Synonyms	4,5-Dihydro-1,3-dimethyl-5-thioxo-1H-pyrazole-4-carbonyl chloride; 1,3-Dimethyl-5-thioxo-4,5-dihydro-1H-pyrazole-4-carbonyl chloride; 1H-Pyrazole-4-carbonyl chloride, 4,5-dihydro-1,3-dimethyl-5-thioxo-; 4-Carbamoyl-1,3-dimethyl-5-thioxo-4,5-dihydro-1H-pyrazole; 4-Chlorocarbonyl-1,3-dimethyl-5-thioxo-4,5-dihydro-1H-pyrazole
EINECS	Contact for details

Quality Control

Our 1H-Pyrazole-4-Carbonylchloride,4,5-Dihydro-1,3-Dimethyl-5-Thioxo-(9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure high purity and batch-to-batch consistency suitable for sensitive R&D and scale-up processes. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is 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 (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent moisture absorption and degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
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.