Description

But-3-En-1-Yl 4-Methylbenzene-1-Sulfonate is a specialized organic sulfonate ester, a key intermediate in advanced chemical synthesis. This compound matters for its role as a versatile building block in the production of pharmaceuticals, agrochemicals, and functional materials. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A crucial building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for molecules requiring a functionalized butenyl chain.
• Agrochemical Synthesis: Used in the production of advanced crop protection agents, herbicides, and fungicides.
• Polymer & Material Science: Serves as a monomer or cross-linking agent in the development of specialty polymers and functional materials.
• Organic Synthesis Reagent: Employed in research laboratories for alkylation and sulfonylation reactions, enabling the introduction of the p-toluenesulfonyl (tosyl) protecting group onto allylic systems.
• Liquid Crystal & Electronic Chemical Production: Acts as a precursor in the manufacture of components for display technologies and other electronic applications.
• Flavor & Fragrance Industry: Utilized as an intermediate for synthesizing specific aroma chemicals and flavor compounds.

Basic Information

Product Name	But-3-En-1-Yl 4-Methylbenzene-1-Sulfonate
CAS No.	778-29-0
Molecular Formula	C11H14O3S
Molecular Weight	226.29 g/mol
Synonyms	3-Buten-1-yl p-toluenesulfonate; 3-Butenyl tosylate; 4-Methylbenzenesulfonic acid but-3-en-1-yl ester; But-3-enyl p-toluenesulfonate; 1-Buten-4-yl tosylate; p-Toluenesulfonic acid 3-butenyl ester; Allylcarbinyl tosylate; 3-Butenyl 4-methylbenzenesulfonate
EINECS	212-300-5

Quality Control

Our But-3-En-1-Yl 4-Methylbenzene-1-Sulfonate is produced 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) documenting identity, purity, and impurity profiles are available for 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, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong bases, and heat sources. For long-term storage, consider under an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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