Description

Toluene-4-Sulfonic Acid 3-Methanesulfonyl-Propyl Ester is a specialized sulfonate ester derivative, valued for its role as a versatile chemical intermediate and protecting group reagent in advanced organic synthesis. Its unique structure, featuring both tosyl and mesyl-like functionalities, makes it a critical building block for constructing complex molecules with high precision. This compound is essential for research and development chemists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to introduce sulfonyl-based motifs or create activated intermediates.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for sulfonamide-based drugs.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the development of specialty polymers and resins.
• Organic Synthesis Reagent: Serves as a protecting group for alcohols or amines, and as an alkylating agent in multi-step synthetic routes.
• Dye and Pigment Manufacturing: Intermediate in the synthesis of sulfonated dyes and high-performance pigments.
• Liquid Crystal & Electronic Materials: Used in the production of precursors for liquid crystal displays (LCDs) and other electronic chemicals.

Basic Information

Product Name	Toluene-4-Sulfonic Acid 3-Methanesulfonyl-Propyl Ester
CAS No.	263400-88-0
Molecular Formula	C11H16O5S2
Molecular Weight	292.37 g/mol
Synonyms	3-Methanesulfonylpropyl p-toluenesulfonate; 3-(Methylsulfonyl)propyl 4-methylbenzenesulfonate; p-Toluenesulfonic acid 3-(methylsulfonyl)propyl ester; 4-Methylbenzenesulfonic acid 3-(methylsulfonyl)propyl ester; Tosic acid 3-methanesulfonylpropyl ester; MSPT; Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our Toluene-4-Sulfonic Acid 3-Methanesulfonyl-Propyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistency. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with every shipment 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 room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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