Description

Isobutyl p-Toluenesulfonate is a versatile organic sulfonate ester widely used as an alkylating agent and synthetic intermediate. Its value lies in its ability to efficiently transfer the isobutyl group under mild conditions, making it a critical reagent for constructing complex molecules. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop new active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for introducing the isobutyl moiety.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and pesticides where specific alkylation steps are required.
• Polymer & Material Science: Acts as a monomer or cross-linking agent in the development of specialty polymers and functional materials.
• Organic Synthesis Reagent: Employed as a reliable alkylating agent in nucleophilic substitution reactions for laboratory and scale-up processes.
• Dye & Pigment Manufacturing: Serves as an intermediate in the synthesis of complex organic dyes and colorants.
• Flavor & Fragrance Industry: Used in the controlled synthesis of ester compounds that contribute to specific scent and flavor profiles.

Basic Information

Product Name	Isobutyl p-Toluenesulfonate
CAS No.	4873-56-7
Molecular Formula	C11H16O3S
Molecular Weight	228.31 g/mol
Synonyms	Isobutyl Tosylate; 4-Methylbenzenesulfonic Acid Isobutyl Ester; p-Toluenesulfonic Acid Isobutyl Ester; Isobutyl 4-Methylbenzenesulfonate; Isobutyl Tosylate Ester; 1-Methylpropyl 4-methylbenzenesulfonate; Tosic Acid Isobutyl Ester
EINECS	225-500-7

Quality Control

Our Isobutyl p-Toluenesulfonate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay by GC or HPLC and identification by FT-IR, to ensure high purity and consistency. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to guarantee compliance with your project requirements.

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 bases and incompatible materials. For long-term storage, consider under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 98.0%
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.