Description

3-Bromo-6,7-Dihydro-4H-Cyclopenta[D]Pyrazolo[1,5-A]Pyrimidin-8(5H)-One is a high-value, multi-functional heterocyclic building block of significant interest in advanced organic synthesis. Its complex fused-ring structure, featuring bromine, pyrazole, and pyrimidine moieties, makes it a versatile intermediate for constructing novel molecular architectures. This compound is primarily sought after by research and development teams in the pharmaceutical and agrochemical industries for the discovery and development of new active ingredients.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel small-molecule drug candidates, particularly for kinase inhibitors and other targeted therapies.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and insecticides due to its bioactive heterocyclic core.
• Chemical Biology Probe Synthesis: Serves as a scaffold for creating molecular probes to study biological pathways and protein functions.
• Material Science Research: Investigated as a building block for advanced organic electronic materials and specialty polymers.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for client-specific synthesis projects.
• Academic & Institutional Research: Utilized in universities and research institutes for methodological studies in heterocyclic and medicinal chemistry.

Basic Information

Product Name	3-Bromo-6,7-Dihydro-4H-Cyclopenta[D]Pyrazolo[1,5-A]Pyrimidin-8(5H)-One
CAS No.	1310249-56-9
Molecular Formula	C9H8BrN3O
Molecular Weight	254.09 g/mol
Synonyms	3-Bromo-5,6,7,8-tetrahydrocyclopenta[d]pyrazolo[1,5-a]pyrimidin-8-one; 3-Bromo-6,7-dihydro-5H-cyclopenta[d]pyrazolo[1,5-a]pyrimidin-8-one; 3-Bromocyclopenta[d]pyrazolo[1,5-a]pyrimidin-8(5H)-one; 1310249-56-9; 3-Bromo-5,6,7,8-tetrahydro-8-oxocyclopenta[d]pyrazolo[1,5-a]pyrimidine
EINECS	Contact for details

Quality Control

Our 3-Bromo-6,7-Dihydro-4H-Cyclopenta[D]Pyrazolo[1,5-A]Pyrimidin-8(5H)-One is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure it meets the high standards required for research and development applications. Certificates of Analysis (COA) with detailed specifications are provided for every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from incompatible materials. For long-term storage, consider storing under an inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC)	Conforms
Identification (NMR)	Conforms
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Single Unknown Impurity (HPLC)	≤ 0.5%
Total Impurities (HPLC)	≤ 3.0%

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