Description

Pexalyn A 500 is a high-purity chemical compound, identified by CAS No. 73905-20-1. It is valued for its consistent quality and reliable performance in specialized industrial synthesis and research applications. This product is essential for manufacturers and R&D laboratories in the pharmaceutical, agrochemical, and advanced material sectors seeking a dependable intermediate.

Application

• Pharmaceutical Intermediate: Serves as a key 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 Production: Acts as a precursor in the manufacture of specialty chemicals and dyes.
• Material Science Research: Employed in R&D for developing novel polymers and functional materials.
• Laboratory Reagent: Utilized as a high-purity standard or reagent in analytical and process development.

Basic Information

Item	Details
Product Name	Pexalyn A 500
CAS No.	73905-20-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Pexalyn A 500; 73905-20-1; 2,4-Di-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)phenol; UV-327; Bumetrizole; Tinuvin 327; 2-(2'-Hydroxy-3',5'-di-tert-butylphenyl)-5-chlorobenzotriazole; 5-Chloro-2-(3,5-di-tert-butyl-2-hydroxyphenyl)-2H-benzotriazole
EINECS	Contact for details

Quality Control

Our Pexalyn A 500 is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for industrial and research applications. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is easily oxidized and should be handled under an inert atmosphere when appropriate. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Melting Point	154 - 158 °C
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 20 ppm

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