Description

p-Toluenesulfonic Acid (S)-2-Methylbutyl Ester is a chiral ester derivative of p-toluenesulfonic acid, serving as a valuable intermediate and chiral auxiliary in advanced organic synthesis. Its primary value lies in its ability to impart stereoselectivity in chemical reactions, enabling the production of enantiomerically pure compounds. This product is essential for research and development laboratories and production facilities in the pharmaceutical, agrochemical, and specialty chemical industries where precise stereochemistry is critical.

Application

• As a chiral resolving agent for the separation of racemic mixtures.
• Key intermediate in the synthesis of pharmaceutical active ingredients (APIs) requiring specific stereochemistry.
• Building block for asymmetric catalysts and ligands used in fine chemical manufacturing.
• Utilized in agrochemical research for developing chiral pesticides and herbicides.
• Employed in academic and industrial R&D for methodological studies in stereoselective synthesis.
• Potential use in the synthesis of liquid crystals and other advanced materials.

Basic Information

Product Name	p-Toluenesulfonic Acid (S)-2-Methylbutyl Ester
CAS No.	38261-81-3
Molecular Formula	C12H18O3S
Molecular Weight	242.34 g/mol
Synonyms	(S)-2-Methylbutyl p-toluenesulfonate; (S)-(-)-2-Methylbutyl p-toluenesulfonate; (S)-2-Methylbutyl tosylate; (S)-(-)-2-Methylbutyl tosylate; p-Toluenesulfonic acid, (S)-2-methylbutyl ester; (S)-sec-Butylcarbinyl p-toluenesulfonate; (S)-1-Methylpropyl p-toluenesulfonate; Tosic acid (S)-2-methylbutyl ester
EINECS	Contact for details

Quality Control

Our p-Toluenesulfonic Acid (S)-2-Methylbutyl Ester is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including chiral purity (enantiomeric excess) determination, to ensure it meets the high standards required for synthetic applications. A Certificate of Analysis (COA) detailing identity, purity, and specific rotation is provided with every shipment to guarantee batch-to-batch consistency and traceability.

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 light-sensitive nature, containers should be kept in the original packaging or opaque storage until use.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Enantiomeric Excess (Chiral HPLC)	≥ 99.0%
Specific Rotation	Contact for details
Water Content (KF)	≤ 0.5%

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