Description

3-Cyclopentapyrazolecarbonyl Chloride, 2,4,5,6-Tetrahydro-2,5-Dimethyl- (9Ci) is a high-purity, reactive chemical intermediate essential for advanced organic synthesis. Its core value lies in its function as a versatile acyl chloride building block, enabling the efficient introduction of the cyclopentapyrazole moiety into complex molecular architectures. This compound is critically needed by research and development chemists in the pharmaceutical and agrochemical industries for the creation of novel active ingredients. The CAS number for this specific compound is 132529-87-4.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates, particularly in central nervous system (CNS) and metabolic disorder research.
• Agrochemical Synthesis: Used in the development of next-generation herbicides, fungicides, and insecticides with targeted modes of action.
• Material Science Research: Serves as a precursor for creating specialized polymers and functional materials with unique thermal or optical properties.
• Chemical Biology Probes: Employed in the design and synthesis of molecular probes for studying enzyme function and biological pathways.
• Custom Synthesis & Contract Manufacturing: A critical reagent for fine chemical manufacturers offering bespoke synthesis services to clients.

Basic Information

Item	Details
Product Name	3-Cyclopentapyrazolecarbonyl Chloride, 2,4,5,6-Tetrahydro-2,5-Dimethyl- (9Ci)
CAS No.	132529-87-4
Molecular Formula	C11H15ClN2O
Molecular Weight	226.70 g/mol
Synonyms	2,4,5,6-Tetrahydro-2,5-dimethyl-3-cyclopentapyrazolecarbonyl chloride; 1H-Cyclopenta[c]pyrazole-3-carbonyl chloride, 4,5,6,7-tetrahydro-2,5-dimethyl-; 2,5-Dimethyl-4,5,6,7-tetrahydro-2H-cyclopenta[c]pyrazole-3-carbonyl chloride; Cyclopentapyrazole-3-carbonyl chloride derivative; Reactive pyrazole acyl chloride intermediate
EINECS	Contact for details

Quality Control

Every batch of 3-Cyclopentapyrazolecarbonyl Chloride is manufactured under strict quality management protocols. Our products undergo rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure high purity and consistent lot-to-lot performance. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place. 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. Recommended long-term storage temperature is 2-8°C.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
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.