Description

Pyrazolo[1,5-A]Pyrimidine-3-Carbonyl Chloride, 2-Methyl- (9Ci) is a high-value heterocyclic building block and key synthetic intermediate. This compound matters for its role as a versatile acylating agent, enabling the efficient construction of complex molecular architectures in advanced research and development. It is primarily needed by pharmaceutical, agrochemical, and advanced material scientists for the synthesis of novel active ingredients and functional molecules.

Application

• Pharmaceutical Intermediate: Critical for the synthesis of kinase inhibitors, antiviral agents, and other small-molecule drug candidates targeting various therapeutic areas.
• Agrochemical Research: Used in the development of novel herbicides, fungicides, and plant growth regulators with enhanced efficacy.
• Material Science: Serves as a precursor for creating specialized polymers, ligands for catalysis, and organic electronic materials.
• Chemical Biology: Employed in the design and synthesis of molecular probes, enzyme inhibitors, and labeled compounds for biochemical studies.
• Custom Synthesis & Contract Manufacturing: A key starting material for custom synthesis projects requiring the pyrazolopyrimidine scaffold.

Basic Information

Product Name	Pyrazolo[1,5-A]Pyrimidine-3-Carbonyl Chloride, 2-Methyl- (9Ci)
CAS No.	96319-39-0
Molecular Formula	C8H6ClN3O
Molecular Weight	195.61 g/mol
Synonyms	2-Methylpyrazolo[1,5-a]pyrimidine-3-carbonyl chloride; 2-Methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid chloride; 2-Methyl-1H-pyrazolo[1,5-a]pyrimidine-3-carbonyl chloride; 2-Methylpyrazolo[1,5-a]pyrimidine-3-carbonyl chloride (9CI); 2-Methylpyrazolo[1,5-a]pyrimidine-3-carboxyl chloride; 96319-39-0; 2-Methyl-1H-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid chloride
EINECS	Contact for details

Quality Control

Our Pyrazolo[1,5-A]Pyrimidine-3-Carbonyl Chloride, 2-Methyl- (9Ci) is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity suitable for research and development applications. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing purity, identity, and impurity profiles as confirmed by HPLC, NMR, and other analytical techniques. Our quality system is designed to meet the stringent requirements of advanced chemical synthesis.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (typically 15-25°C). 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 degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0% (Area %)
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.