Description

(R)-4-Chlorostyrene Oxide is a high-value chiral epoxide building block, essential for the synthesis of enantiomerically pure compounds. Its defined stereochemistry is critical for producing active pharmaceutical ingredients (APIs) and advanced materials with specific optical properties. This compound is primarily needed by research institutions and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for developing novel chiral molecules.

Application

• Chiral Intermediate in Pharmaceutical Synthesis: A key building block for the preparation of enantiopure drugs, particularly in the development of β-blockers, anti-inflammatory agents, and other bioactive molecules.
• Agrochemical Research & Development: Used in the synthesis of chiral pesticides and herbicides where specific stereochemistry is required for optimal biological activity and environmental safety.
• Liquid Crystal & Advanced Material Precursor: Serves as a starting material for synthesizing chiral dopants and monomers used in liquid crystal displays (LCDs) and functional polymers.
• Asymmetric Catalysis & Ligand Synthesis: Employed in the development and testing of new chiral catalysts and ligands for stereoselective chemical transformations.
• Fine Chemical & Flavor/Fragrance Ingredient: Utilized in the production of high-value chiral flavor and fragrance compounds.
• Academic & Industrial Research: A valuable reagent for methodological studies in organic chemistry, particularly in epoxide ring-opening reactions and stereochemistry investigations.

Basic Information

Product Name	(R)-4-Chlorostyrene Oxide
CAS No.	21019-51-2
Molecular Formula	C8H7ClO
Molecular Weight	154.59 g/mol
Synonyms	(R)-1-Chloro-4-(oxiran-2-yl)benzene; (R)-4-Chloro-α,β-epoxystyrene; (R)-p-Chlorostyrene Oxide; (2R)-2-[(4-Chlorophenyl)methyl]oxirane; (R)-4-Chlorophenylethylene Oxide; (R)-4-Chlorostyrene 7,8-Oxide; (R)-4-CSO; (R)-4-Chloro-1,2-epoxyethylbenzene
EINECS	Contact for details

Quality Control

Our (R)-4-Chlorostyrene Oxide is produced under strict quality management protocols to ensure high enantiomeric purity and chemical consistency, suitable for demanding synthetic applications. Each batch is characterized by advanced analytical techniques including chiral HPLC, GC, and NMR spectroscopy. Certificates of Analysis (COA) detailing purity, enantiomeric excess (ee), and impurity profiles are provided with every shipment 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 place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (e.g., nitrogen or argon) for long-term storage to prevent hydrolysis and maintain purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 98.0%
Enantiomeric Excess (ee)	≥ 99.0%
Water Content (KF)	≤ 0.5%
Specific Rotation [α]D20	Contact for details

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