Description

4-Quinazolinol (9Ci) CAS NO 134434-33-6 is a heterocyclic organic compound belonging to the quinazoline class, which serves as a versatile and critical building block in advanced chemical synthesis. Its core value lies in its role as a privileged scaffold for developing pharmacologically active molecules and functional materials. This intermediate is essential for research and development teams in the pharmaceutical, agrochemical, and material science industries seeking to innovate new active ingredients and specialty chemicals.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting kinases, enzymes, and various receptors.
• Agrochemical Research: Used in developing new generations of herbicides, fungicides, and plant growth regulators.
• Material Science: Serves as a building block for creating organic ligands, coordination polymers, and advanced functional materials.
• Chemical Biology & Proteomics: Employed in the design of molecular probes and activity-based protein profiling (ABPP) reagents.
• Academic & Contract Research: A fundamental reagent for methodological development in organic chemistry and medicinal chemistry research programs.
• Dye & Pigment Intermediate: Used in the synthesis of specialized heterocyclic dyes and colorants.

Basic Information

Product Name	4-Quinazolinol (9Ci)
CAS No.	134434-33-6
Molecular Formula	C8H6N2O
Molecular Weight	146.15 g/mol
Synonyms	4-Hydroxyquinazoline; Quinazolin-4-ol; 4(3H)-Quinazolinone; 4-Quinazolinone; 4-Hydroxy-1,3-diazanaphthalene; 4-Oxo-3,4-dihydroquinazoline; 1,3-Diazanaphthalen-4-ol; NSC 403697
EINECS	Contact for details

Quality Control

Our 4-Quinazolinol (9Ci) is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and MS, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with each shipment, documenting all critical quality attributes. Our production adheres to cGMP principles where applicable, supporting its use in regulated research and development.

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. For long-term storage, consider an inert atmosphere to ensure optimal stability.

Specification

Item	Specification
Appearance	White to off-white 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.