Description

4(3H)-Quinazolinone, 2-Amino-7-Chloro- CAS NO 20198-18-9 is a high-purity, halogenated quinazolinone derivative serving as a critical building block in advanced organic synthesis. This compound is valued for its unique heterocyclic structure, which provides a versatile scaffold for developing novel active pharmaceutical ingredients (APIs) and specialty chemicals. It is primarily sought by research institutions and manufacturers in the pharmaceutical, agrochemical, and material science industries for the development of new therapeutic agents and functional molecules.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders, anti-cancer agents, and antimicrobial compounds.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and plant growth regulators, leveraging its heterocyclic core for bioactivity.
• Organic Synthesis Building Block: Employed in complex multi-step syntheses to construct fused heterocyclic systems and functionalized quinazolinone libraries for screening.
• Material Science Research: Investigated as a monomer or precursor for creating specialty polymers, dyes, and photoactive materials.
• Biochemical Tool Compound: Utilized in academic and industrial research to study enzyme inhibition and receptor-ligand interactions.

Basic Information

Product Name	4(3H)-Quinazolinone, 2-Amino-7-Chloro- CAS NO 20198-18-9
CAS No.	20198-18-9
Molecular Formula	C8H6ClN3O
Molecular Weight	195.61 g/mol
Synonyms	2-Amino-7-chloro-4(3H)-quinazolinone; 7-Chloro-2-amino-4(3H)-quinazolinone; 2-Amino-7-chloro-3,4-dihydroquinazolin-4-one; 7-Chloro-2-amino-3H-quinazolin-4-one; 2-Amino-7-chloroquinazolin-4(3H)-one; 20198-18-9; 7-Chloro-2-aminodihydroquinazolin-4-one; 2-Amino-7-chloro-4-hydroxyquinazoline
EINECS	Contact for details

Quality Control

Our 4(3H)-Quinazolinone, 2-Amino-7-Chloro- is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and synthesis. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are available upon request 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 area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm
Single Unknown Impurity (HPLC)	≤ 0.5%
Total Impurities (HPLC)	≤ 2.0%

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