Description

Ethyl 5-Chloropyrazolo[1,5-A]Quinazoline-3-Carboxylate is a high-purity, advanced pharmaceutical intermediate with the CAS registry number 174842-56-9. This heterocyclic compound is valued for its role as a critical building block in the synthesis of novel active pharmaceutical ingredients (APIs). It is primarily sought by research institutions and manufacturers in the pharmaceutical and agrochemical sectors for developing new therapeutic agents and crop protection solutions.

Application

• Pharmaceutical Intermediate: A key precursor in the research and synthesis of novel quinazoline-based drug candidates targeting various therapeutic areas.
• Agrochemical Research: Used in the development of new pesticides and herbicides, leveraging its heterocyclic structure for biological activity.
• Organic Synthesis Building Block: Serves as a versatile scaffold in academic and industrial organic chemistry for constructing complex molecular architectures.
• Material Science Research: Investigated for potential applications in creating specialty chemicals and functional materials.

Basic Information

Product Name	Ethyl 5-Chloropyrazolo[1,5-A]Quinazoline-3-Carboxylate
CAS No.	174842-56-9
Molecular Formula	C₁₄H₁₀ClN₃O₂
Molecular Weight	287.70 g/mol
Synonyms	5-Chloro-3-(ethoxycarbonyl)pyrazolo[1,5-a]quinazoline; Ethyl 5-chloro-1,5-dihydropyrazolo[1,5-a]quinazoline-3-carboxylate; 5-Chloropyrazolo[1,5-a]quinazoline-3-carboxylic acid ethyl ester; 174842-56-9; Pyrazolo[1,5-a]quinazoline-3-carboxylic acid, 5-chloro-, ethyl ester; Ethyl 5-chloropyrazolo[1,5-a]quinazoline-3-carboxylate
EINECS	Contact for details

Quality Control

Our Ethyl 5-Chloropyrazolo[1,5-A]Quinazoline-3-Carboxylate 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. A comprehensive Certificate of Analysis (COA) is provided with every shipment, detailing all specifications and test results.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). Keep away from incompatible materials. The container must be kept tightly closed to prevent moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference standard
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.