Description

Toluene-4-Sulfonic Acid Dibenzyl-α-& CAS NO 19816-85-4 is a specialized organic sulfonic acid derivative, primarily utilized as a key intermediate and protecting group reagent in advanced organic synthesis. Its value lies in its ability to facilitate complex chemical transformations, particularly in the synthesis of pharmaceuticals and fine chemicals, where precise control over molecular structure is critical. This compound is essential for R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to build complex molecular architectures.

Application

• Pharmaceutical Intermediate: A crucial building block in the multi-step synthesis of active pharmaceutical ingredients (APIs), particularly for complex molecules.
• Protecting Group Reagent: Used to temporarily protect sensitive functional groups (like alcohols or amines) during complex synthetic sequences, enabling selective reactions.
• Fine Chemical Synthesis: Employed in the production of specialty chemicals, dyes, pigments, and advanced materials requiring sulfonic acid functionality.
• Catalyst and Co-catalyst: Can act as an acid catalyst or a component in catalyst systems for esterification, alkylation, and other organic reactions.
• Research & Development: A valuable tool in academic and industrial R&D laboratories for methodological development and exploring new synthetic pathways.
• Agrochemical Production: Serves as an intermediate in the synthesis of certain herbicides, fungicides, and plant growth regulators.

Basic Information

Product Name	Toluene-4-Sulfonic Acid Dibenzyl-α-& CAS NO 19816-85-4
CAS No.	19816-85-4
Molecular Formula	C21H20O3S
Molecular Weight	352.45 g/mol
Synonyms	Dibenzyl Toluene-p-sulfonate; alpha,α-Dibenzyl-p-toluenesulfonic Acid; p-Toluenesulfonic Acid Dibenzyl Ester; 4-Methylbenzenesulfonic Acid 1,1-Diphenylethyl Ester; Benzenemethanol, α-(phenylmethyl)-, 4-methylbenzenesulfonate; Toluene-p-sulfonic Acid Dibenzyl Ester; Dibenzyl Tosylate; 1,1-Diphenylethyl p-Toluenesulfonate
EINECS	Contact for details

Quality Control

Our Toluene-4-Sulfonic Acid Dibenzyl-α-& CAS NO 19816-85-4 is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency, meeting the high standards required for synthetic intermediates. Certificates of Analysis (COA) detailing specific batch results are available upon request to support your quality assurance and regulatory documentation.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, open flames, and incompatible materials such as strong bases and strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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