Description

7-Chloromethyl-2-Methyl-4H-Pyrazolo[1,5-A]-Pyrimidin-5-One is a high-value heterocyclic building block and key synthetic intermediate. This compound matters for its role in constructing complex molecular architectures, particularly in the development of novel active pharmaceutical ingredients (APIs). Pharmaceutical R&D teams and fine chemical manufacturers need this material for advanced synthesis projects, including the creation of potential therapeutic agents.

Application

• Pharmaceutical Intermediate: A crucial building block in the synthesis of novel drug candidates, particularly in medicinal chemistry research.
• Agrochemical Development: Used in the research and production of advanced pesticides and herbicides, leveraging its heterocyclic core.
• Material Science Research: Serves as a precursor for creating specialized organic compounds with potential electronic or photonic properties.
• Academic & Industrial R&D: Employed in chemical libraries and for method development in organic synthesis laboratories worldwide.
• Custom Synthesis: A starting material for contract research organizations (CROs) and CDMOs producing bespoke fine chemicals for clients.

Basic Information

Product Name	7-Chloromethyl-2-Methyl-4H-Pyrazolo[1,5-A]-Pyrimidin-5-One
CAS No.	832737-54-9
Molecular Formula	C8H8ClN3O
Molecular Weight	197.62 g/mol
Synonyms	7-(Chloromethyl)-2-methyl-4H-pyrazolo[1,5-a]pyrimidin-5-one; 2-Methyl-7-(chloromethyl)pyrazolo[1,5-a]pyrimidin-5(4H)-one; 832737-54-9; Pyrazolo[1,5-a]pyrimidin-5-one, 7-(chloromethyl)-2-methyl-4H-; 7-Chloromethyl-2-methyl-4H-pyrazolo[1,5-a]pyrimidin-5-one
EINECS	Contact for details

Quality Control

Our 7-Chloromethyl-2-Methyl-4H-Pyrazolo[1,5-A]-Pyrimidin-5-One is produced 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 (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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