Description

p-Toluenesulfonic Acid 1-Butyn-3-Yl Ester is a specialized organic ester of p-toluenesulfonic acid, serving as a versatile sulfonate ester intermediate and alkylating agent in advanced chemical synthesis. Its core value lies in its ability to introduce the butynyl sulfonate moiety, facilitating key transformations in the construction of complex molecules. This compound is primarily needed by pharmaceutical and agrochemical research and development teams, as well as by fine chemical manufacturers engaged in custom synthesis.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs), particularly in building blocks requiring sulfonate ester functionalities.
• Agrochemical Synthesis: Serves as a key reagent in the development of novel herbicides, fungicides, and plant growth regulators.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the production of specialty polymers and resins.
• Organic Synthesis Reagent: Employed as an alkylating agent or a precursor for introducing functional groups in complex organic molecule construction.
• Material Science Research: Utilized in the development of advanced materials, including liquid crystals and organic electronic components.
• Chemical Derivatization: Applied in analytical chemistry for the derivatization of compounds to enhance detection or separation.

Basic Information

Product Name	p-Toluenesulfonic Acid 1-Butyn-3-Yl Ester
CAS No.	53487-52-8
Molecular Formula	C11H12O3S
Molecular Weight	224.28 g/mol
Synonyms	1-Butyn-3-yl p-toluenesulfonate; 3-Butynyl p-toluenesulfonate; 3-Butyn-1-yl tosylate; p-Toluenesulfonic acid 3-butynyl ester; Tosic acid 1-butyn-3-yl ester; 4-Methylbenzenesulfonic acid 3-butynyl ester; 3-Butynyl tosylate; 4-Toluenesulfonic acid 3-butyn-1-yl ester
EINECS	Contact for details

Quality Control

Our p-Toluenesulfonic Acid 1-Butyn-3-Yl Ester is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure high purity and consistent performance. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, identity, and impurity profiles. Our quality systems are designed to support cGMP and ISO standards for reliable supply to regulated industries.

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). Keep away from heat, sparks, and open flame. Due to its nature as a strong acid/organic solvent derivative, it should be stored separately from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Residual Solvents (GC)	Meets ICH guidelines

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