Description

5-Chloropyrazolo[1,5-A]Pyrimidin-7(1H)-One is a high-purity heterocyclic building block of significant interest in advanced organic synthesis. Its core value lies in its versatile pyrazolopyrimidine scaffold, which serves as a critical intermediate for the development of novel pharmacologically active compounds. This product is essential for research and development chemists in the pharmaceutical and agrochemical industries, particularly those focused on creating new active pharmaceutical ingredients (APIs) and crop protection agents.

Application

• Pharmaceutical Intermediate: A key synthon for the research and development of potential drug candidates targeting various therapeutic areas.
• Agrochemical Synthesis: Used in the creation of novel herbicides, fungicides, and insecticides, leveraging its bioactive heterocyclic structure.
• Material Science Research: Serves as a precursor for the synthesis of specialized organic materials and ligands for catalysis.
• Academic & Contract Research: A valuable reagent for universities and CROs (Contract Research Organizations) conducting exploratory chemistry and method development.
• Custom Synthesis: Employed as a starting material for the bespoke production of complex molecules for client-specific projects.

Basic Information

Product Name	5-Chloropyrazolo[1,5-A]Pyrimidin-7(1H)-One
CAS No.	99898-84-7
Molecular Formula	C6H3ClN4O
Molecular Weight	182.57 g/mol
Synonyms	5-Chloro-1H-pyrazolo[1,5-a]pyrimidin-7-one; 5-Chloro-7H-pyrazolo[1,5-a]pyrimidin-7-one; 5-Chloropyrazolo[1,5-a]pyrimidin-7-ol; 99898-84-7; 5-Chloro-1H,7H-pyrazolo[1,5-a]pyrimidin-7-one; 5-Chloro-7-oxo-4,7-dihydro-1H-pyrazolo[1,5-a]pyrimidine
EINECS	Contact for details

Quality Control

Our 5-Chloropyrazolo[1,5-A]Pyrimidin-7(1H)-One is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity, suitable for demanding synthetic applications. We provide comprehensive analytical data, including HPLC, NMR, and mass spectrometry. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is supplied with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials. Due to its light-sensitive nature, handling should be conducted under appropriate conditions to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
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.