Description

A 643C CAS NO 65822-42-6 is a specialized chemical compound identified by the CAS registry number 65822-42-6. This product is valued for its consistent quality and reliable performance in advanced industrial synthesis and research applications. It is primarily sought by professionals in the pharmaceutical, agrochemical, and specialty chemical manufacturing sectors for use as a key intermediate or reagent.

Application

• Pharmaceutical Intermediate: Serves as a critical building block in the synthesis of active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the production of advanced crop protection agents and herbicides.
• Fine Chemical Manufacturing: Acts as a precursor in the creation of complex organic molecules for various industrial applications.
• Research & Development: Employed in academic and industrial R&D labs for method development and novel compound synthesis.
• Material Science: Potential use in the development of specialty polymers and advanced functional materials.

Basic Information

Product Name	A 643C
CAS No.	65822-42-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	A-643C, A643C, Compound 65822-42-6, 2,4-Dichloro-5-fluoropyrimidine, 5-Fluoro-2,4-dichloropyrimidine, 2,4-Dichloro-5-fluoro-1,3-diazine, NSC 403169, Fluoropyrimidine derivative
EINECS	Contact for details

Quality Control

Our A 643C is produced under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including identification, assay, and impurity profiling. Certificates of Analysis (COA) documenting full specifications are available upon request to support your quality assurance and regulatory compliance needs.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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