Description

4(5H)-Pyrimidinone (9Ci) CAS NO 738553-66-7 is a heterocyclic organic compound belonging to the pyrimidinone class, serving as a versatile and critical building block in advanced chemical synthesis. Its unique structure makes it a valuable intermediate for constructing complex molecules, particularly in the development of active pharmaceutical ingredients (APIs) and specialty agrochemicals. This high-purity intermediate is essential for research and production facilities in the pharmaceutical, agrochemical, and fine chemical industries seeking reliable, high-quality raw materials for their synthetic pathways.

Application

• Pharmaceutical Intermediate: A key synthon in the research and production of novel drug candidates, particularly for antiviral, anticancer, and central nervous system (CNS) active compounds.
• Agrochemical Synthesis: Used in the development of advanced herbicides, fungicides, and plant growth regulators that require specific heterocyclic frameworks.
• Fine Chemical Production: Serves as a fundamental building block for creating complex molecules used in dyes, pigments, and advanced material science.
• Academic & Industrial Research: A valuable reagent for medicinal chemistry and organic synthesis research in both university laboratories and corporate R&D centers.
• Ligand and Catalyst Development: Utilized in the synthesis of specialized ligands for metal catalysis and coordination chemistry applications.

Basic Information

Product Name	4(5H)-Pyrimidinone (9Ci)
CAS No.	738553-66-7
Molecular Formula	C4H4N2O
Molecular Weight	96.09 g/mol
Synonyms	4(5H)-Pyrimidinone; 4-Hydroxypyrimidine; 4-Pyrimidinol; 4-Pyrimidinone; 5H-Pyrimidin-4-one; Pyrimidin-4(5H)-one; 1H-Pyrimidin-4-one; 738553-66-7 (CAS)
EINECS	Contact for details

Quality Control

Every batch of 4(5H)-Pyrimidinone is manufactured under a strict quality management system and undergoes comprehensive analytical testing to ensure it meets the high standards required for advanced synthetic applications. We provide full traceability and Certificates of Analysis (COA) detailing purity, identity, and impurity profiles for each shipment. Our quality commitment aligns with cGMP principles where applicable, ensuring reliable and consistent performance in your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (typically 15-25°C). Keep away from incompatible materials such as strong oxidizing agents. For long-term storage, consider an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	< 10 ppm

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