Description

5-(Chloromethyl)-2-Methylpyrazolo[1,5-A]Pyrimidin-7(4H)-One (Saltdata: Free) is a high-purity, advanced pharmaceutical intermediate. This compound is a key building block in the synthesis of complex heterocyclic molecules, offering a reactive chloromethyl handle for further functionalization. It is primarily utilized by research institutions and pharmaceutical manufacturers engaged in the development of novel active pharmaceutical ingredients (APIs) and agrochemicals.

Application

• Pharmaceutical Intermediate: Serves as a critical precursor in the synthesis of potential drug candidates, particularly those targeting neurological and oncological pathways.
• Agrochemical Research: Used in the development of new pesticides and herbicides, leveraging its pyrazolopyrimidine core structure.
• Chemical Synthesis Building Block: The reactive chloromethyl group enables nucleophilic substitution reactions, facilitating the creation of diverse chemical libraries for screening.
• Academic & Contract Research: Employed in university and CRO laboratories for methodological studies and the exploration of new heterocyclic chemistry.
• Material Science Exploration: Investigated as a monomer or precursor for specialty polymers and functional materials.

Basic Information

Product Name	5-(Chloromethyl)-2-Methylpyrazolo[1,5-A]Pyrimidin-7(4H)-One (Saltdata: Free)
CAS No.	952938-62-4
Molecular Formula	C8H8ClN3O
Molecular Weight	197.62 g/mol
Synonyms	5-(Chloromethyl)-2-methyl-4H-pyrazolo[1,5-a]pyrimidin-7-one; 2-Methyl-5-(chloromethyl)pyrazolo[1,5-a]pyrimidin-7(4H)-one; 952938-62-4; 5-(Chloromethyl)-2-methylpyrazolo[1,5-a]pyrimidin-7-ol; 5-(Chloromethyl)-2-methyl-7H-pyrazolo[1,5-a]pyrimidin-7-one
EINECS	Contact for details

Quality Control

Our 5-(Chloromethyl)-2-Methylpyrazolo[1,5-A]Pyrimidin-7(4H)-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your quality assurance and regulatory needs.

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 to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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