Description

(-)-1-Phenylethanesulfonic Acid is a high-purity chiral sulfonic acid derivative, serving as a critical building block and resolving agent in advanced organic synthesis. Its value lies in its ability to induce chirality and act as a versatile intermediate for creating optically active compounds. This product is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries, particularly for developing active pharmaceutical ingredients (APIs) and fine chemicals.

Application

• Chiral Resolution Agent: Used for the separation of racemic mixtures of amines and other basic compounds.
• Pharmaceutical Intermediate: A key building block in the synthesis of enantiomerically pure drugs and active pharmaceutical ingredients (APIs).
• Catalyst and Ligand Precursor: Employed in the preparation of chiral catalysts and ligands for asymmetric synthesis.
• Agrochemical Synthesis: Intermediate in the production of chiral pesticides and herbicides.
• Fine Chemical Production: Used in the manufacture of specialty chemicals, flavors, and fragrances requiring high optical purity.
• Research & Development: A valuable tool in academic and industrial R&D for method development and exploring new chiral transformations.

Basic Information

Product Name	(-)-1-Phenylethanesulfonic Acid
CAS No.	86963-38-4
Molecular Formula	C8H10O3S
Molecular Weight	186.23 g/mol
Synonyms	(-)-(R)-1-Phenylethanesulfonic Acid; (R)-(-)-1-Phenylethanesulfonic Acid; (R)-1-Phenylethanesulfonic Acid; (R)-α-Methylbenzenemethanesulfonic Acid; PES Acid; (R)-Phenylethanesulfonic Acid; 1-Phenylethanesulfonic Acid, (R)-(-)-; (R)-Phenylmethylsulfonic Acid
EINECS	Contact for details

Quality Control

Our (-)-1-Phenylethanesulfonic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity assay and impurity profiling, to ensure it meets the high standards required for synthetic applications. Certificates of Analysis (COA) detailing purity, enantiomeric excess, and specific tests are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Enantiomeric Excess (Chiral HPLC)	≥ 99.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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