Description

(S)-(+)-1-Methylpropyl 4-Methylbenzenesulfonate is a high-purity chiral sulfonate ester, a valuable building block in asymmetric synthesis and pharmaceutical intermediate manufacturing. Its defined stereochemistry is critical for producing enantiomerically pure compounds, ensuring high efficacy and specificity in final active ingredients. This product is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and advanced materials sectors who require reliable, high-quality chiral synthons.

Application

• Pharmaceutical Intermediate: A key chiral precursor in the synthesis of enantiomerically pure active pharmaceutical ingredients (APIs).
• Asymmetric Synthesis: Used as a chiral alkylating or sulfonylating agent in stereoselective carbon-carbon and carbon-heteroatom bond formation.
• Agrochemical Research: Serves as a building block for developing chiral herbicides, fungicides, and pesticides with improved selectivity.
• Ligand and Catalyst Development: Employed in the preparation of chiral ligands for transition metal catalysis.
• Fine Chemical Synthesis: Utilized in custom synthesis and process development for specialty chemicals requiring specific stereochemistry.
• Academic & Industrial R&D: A valuable tool for methodological development in organic synthesis and stereochemistry studies.

Basic Information

Product Name	(S)-(+)-1-Methylpropyl 4-Methylbenzenesulfonate
CAS No.	50896-54-3
Molecular Formula	C12H18O3S
Molecular Weight	242.33 g/mol
Synonyms	(S)-(+)-sec-Butyl p-toluenesulfonate; (S)-sec-Butyl tosylate; (S)-1-Methylpropyl tosylate; (S)-2-Butyl p-toluenesulfonate; (S)-(+)-2-Butyl tosylate; (S)-Butan-2-yl 4-methylbenzenesulfonate; (S)-sec-Butyl 4-methylbenzenesulfonate; p-Toluenesulfonic acid (S)-sec-butyl ester
EINECS	Contact for details

Quality Control

Our (S)-(+)-1-Methylpropyl 4-Methylbenzenesulfonate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity analysis (HPLC/GC), to ensure it meets the high standards required for synthetic applications. A Certificate of Analysis (COA) detailing identity, purity, enantiomeric excess, and impurity profile is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage under inert atmosphere, please contact our technical team for specific recommendations.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC/GC)	≥ 98.0%
Enantiomeric Excess (Chiral HPLC)	≥ 99.0%
Water Content (KF)	≤ 0.5%

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