Description

A 201A CAS NO 37305-78-5 is a high-purity chemical intermediate designed for advanced synthesis and formulation processes. This compound is valued for its specific reactivity and role in creating specialized materials, offering manufacturers a reliable and consistent building block. It is primarily utilized by the pharmaceutical, agrochemical, and specialty chemical industries for research, development, and production-scale applications.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of active pharmaceutical ingredients (APIs) and other drug substances.
• Agrochemical Synthesis: Used in the production of advanced crop protection agents, including herbicides and fungicides.
• Specialty Polymer Production: Serves as a monomer or cross-linking agent in the manufacture of high-performance polymers and resins.
• Fine Chemical Manufacturing: Employed in multi-step organic synthesis for creating complex molecules in research and industrial settings.
• Material Science Research: Acts as a precursor in the development of novel organic electronic materials or advanced coatings.
• Dye and Pigment Intermediate: Utilized in the synthesis of specialized colorants and functional dyes.

Basic Information

Product Name	A 201A
CAS No.	37305-78-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	1,3-Benzenedicarboxylic acid, 5-sulfo-, sodium salt (1:?); Sodium 5-sulfoisophthalate; 5-Sulfoisophthalic acid monosodium salt; A 201A; A-201A; CAS 37305-78-5; 5-Sodiosulfoisophthalic acid
EINECS	Contact for details

Quality Control

Our A 201A is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Every lot undergoes comprehensive analytical testing, including assay and impurity profile determination via techniques such as HPLC and titration. A Certificate of Analysis (COA) documenting all test results is provided with each shipment to guarantee compliance with your specifications and industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its light-sensitive and easily oxidized nature, it is recommended to store this material under an inert atmosphere for long-term stability and to minimize degradation.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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