Description

(S)-(-)-Methyl p-Tolyl Sulfoxide is a high-purity chiral sulfoxide compound, a crucial building block in asymmetric synthesis. Its value lies in its role as a versatile chiral auxiliary and ligand, enabling the production of enantiomerically pure pharmaceuticals and fine chemicals. This product is essential for research and development chemists and process engineers in the pharmaceutical, agrochemical, and advanced materials sectors who require reliable, high-quality chiral intermediates.

Application

• As a chiral ligand or catalyst in asymmetric synthesis reactions.
• Key intermediate in the research and production of enantiomerically pure active pharmaceutical ingredients (APIs).
• Building block for the synthesis of novel agrochemicals and specialty chemicals.
• Use in methodological development for organic and medicinal chemistry research.
• Precursor for the preparation of other functionalized chiral sulfoxides.
• Application in material science for the development of chiral polymers or catalysts.

Basic Information

Product Name	(S)-(-)-Methyl p-Tolyl Sulfoxide
CAS No.	5056-07-5
Molecular Formula	C8H10OS
Molecular Weight	154.23 g/mol
Synonyms	(S)-Methyl p-Tolyl Sulfoxide; (S)-(-)-Methyl 4-Methylphenyl Sulfoxide; (S)-Methyl 4-Tolyl Sulfoxide; (S)-p-Tolyl Methyl Sulfoxide; (S)-(-)-Methyl-p-tolylsulfoxide; (S)-Methyl tolyl sulfoxide; Methyl (4-methylphenyl) sulfoxide, (S)-; (S)-1-Methyl-4-[(methylsulfinyl)methyl]benzene
EINECS	Contact for details

Quality Control

Our (S)-(-)-Methyl p-Tolyl Sulfoxide is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high chemical purity. We employ advanced analytical techniques including HPLC, GC, and chiral analysis to verify identity, purity, and enantiomeric excess. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Due to its hygroscopic nature, the container should be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent moisture absorption. Recommended long-term storage temperature is 2-8°C.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Enantiomeric Excess (Chiral HPLC)	≥ 99.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%

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