Description

4(1H)-Pyrimidinone, 5-Chloro- (9Ci) is a versatile halogenated pyrimidinone derivative, serving as a critical building block in advanced organic synthesis. Its value lies in its reactive chlorinated pyrimidine core, which enables precise molecular construction for high-value applications. This compound is primarily needed by research and development chemists in the pharmaceutical and agrochemical industries for creating novel active ingredients and intermediates.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of nucleoside analogs, antiviral agents, and other active pharmaceutical ingredients (APIs).
• Agrochemical Research: Used in the development of novel herbicides, fungicides, and plant growth regulators.
• Chemical Synthesis Building Block: Employed in heterocyclic chemistry for constructing complex fused-ring systems and functionalized pyrimidines.
• Material Science Research: Investigated as a monomer or precursor for specialty polymers and advanced organic materials.
• Biochemical Research: Serves as a substrate or inhibitor in enzymatic studies and biochemical pathway investigations.

Basic Information

Product Name	4(1H)-Pyrimidinone, 5-Chloro- (9Ci)
CAS No.	4349-08-0
Molecular Formula	C4H3ClN2O
Molecular Weight	130.53 g/mol
Synonyms	5-Chloro-4(1H)-pyrimidinone; 5-Chloro-1H-pyrimidin-4-one; 5-Chloro-4-hydroxypyrimidine; 5-Chloropyrimidin-4-ol; 5-Chloro-4-pyrimidinol; 5-Chloro-4(1H)-pyrimidone; 5-Chloro-4-pyrimidone; 5-Chloro-1,4-dihydropyrimidin-4-one
EINECS	Contact for details

Quality Control

Our 4(1H)-Pyrimidinone, 5-Chloro- (9Ci) is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency, meeting the high standards required for research and process development. A comprehensive Certificate of Analysis (COA) detailing purity (typically by HPLC), identification (IR), and impurity profiles is provided with every shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from incompatible materials. For long-term storage, consider storing under an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%

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