Description

4(3H)-Quinazolinethione is a versatile heterocyclic organic compound with a fused benzene and pyrimidine ring system bearing a thione group. This unique structure makes it a valuable intermediate for synthesizing a wide range of pharmacologically active molecules and advanced materials. It is primarily sought after by research institutions and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for developing new active ingredients and functional compounds.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of various drug candidates, particularly those targeting neurological disorders, cancers, and infectious diseases.
• Agrochemical Research: Used in the development of novel herbicides, fungicides, and insecticides, leveraging its heterocyclic core for bioactivity.
• Organic Synthesis Reagent: Serves as a versatile precursor for creating complex heterocyclic libraries and functionalized quinazoline derivatives in medicinal chemistry.
• Material Science: Investigated for potential applications in organic electronics, such as in the development of organic semiconductors or light-emitting materials.
• Biochemical Research: Utilized as a scaffold or inhibitor in biochemical assays and enzyme studies due to its ability to interact with biological targets.

Basic Information

Product Name	4(3H)-Quinazolinethione
CAS No.	3337-86-8
Molecular Formula	C8H6N2S
Molecular Weight	162.21 g/mol
Synonyms	4-Quinazolinethiol; 4-Thioxo-3,4-dihydroquinazoline; 4-Mercaptoquinazoline; 3,4-Dihydro-4-thioxoquinazoline; Quinazoline-4-thione; 4(3H)-Quinazolinone thione; 4-Quinazolinthiol; 4-Thioxoquinazoline
EINECS	222-069-7

Quality Control

Our 4(3H)-Quinazolinethione is produced under stringent quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity, IR and NMR for structural confirmation, and residual solvent analysis. We provide detailed Certificates of Analysis (COA) with each shipment, ensuring traceability and compliance with your research or production specifications. Custom purity grades, including research and pharmaceutical intermediate standards, are available.

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 strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
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.