Description

(4S)-4-Ethyl-2-Oxazolidinone is a high-purity, chiral oxazolidinone derivative widely utilized as a versatile chiral auxiliary and building block in asymmetric synthesis. Its value lies in enabling the stereoselective construction of complex molecules, which is critical for developing pharmaceuticals and fine chemicals with high enantiomeric purity. This product is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and advanced material sectors who require reliable, high-quality chiral intermediates.

Application

• Pharmaceutical Intermediate: A key chiral auxiliary in the asymmetric synthesis of active pharmaceutical ingredients (APIs), particularly for β-amino acid derivatives and other bioactive compounds.
• Asymmetric Catalysis & Synthesis: Used to induce chirality in aldol reactions, alkylations, and other carbon-carbon bond-forming reactions, crucial for producing single-enantiomer products.
• Agrochemical Research: Serves as a building block for developing chiral herbicides, fungicides, and pesticides with improved efficacy and environmental profiles.
• Fine Chemical Production: Employed in the manufacture of specialty chemicals, flavors, and fragrances where stereochemical control is paramount.
• Academic & Industrial R&D: A valuable reagent for methodological development in organic chemistry and process optimization in pilot-scale operations.
• Material Science: Potential precursor for chiral polymers or liquid crystals with specific optical properties.

Basic Information

Product Name	(4S)-4-Ethyl-2-Oxazolidinone
CAS No.	13896-06-5
Molecular Formula	C5H9NO2
Molecular Weight	115.13 g/mol
Synonyms	(4S)-(-)-4-Ethyl-2-oxazolidinone; (S)-(-)-4-Ethyl-2-oxazolidinone; (S)-4-Ethyloxazolidin-2-one; L-4-Ethyl-2-oxazolidinone; (S)-4-Ethyl-2-oxazolidinone; Evans Auxiliary derivative; 2-Oxazolidinone, 4-ethyl-, (4S)-; UNII-9F8P8N5XRH
EINECS	Contact for details

Quality Control

Our (4S)-4-Ethyl-2-Oxazolidinone is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity (enantiomeric excess) and chemical purity assays, to ensure it meets the stringent requirements for synthetic applications. A Certificate of Analysis (COA) detailing specifications such as assay, optical rotation, and impurity profile is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (typically 15-25°C). The product is moisture-sensitive; keep the container tightly sealed in a dry environment to prevent degradation.

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%
Optical Rotation [α]	Contact for details
Loss on Drying	≤0.5%
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.