Description

(S)-4-Bromostyrene Oxide CAS NO 148684-05-3 is a high-value chiral epoxide building block essential for asymmetric synthesis in advanced pharmaceutical and agrochemical research. Its enantiopure structure provides a critical handle for constructing complex molecules with precise stereochemistry, enabling the development of novel active ingredients. This compound is primarily sought by process chemists and researchers in pharmaceutical R&D, fine chemical synthesis, and advanced material science.

Application

• Pharmaceutical Intermediate: Key chiral synthon for the synthesis of active pharmaceutical ingredients (APIs) and drug candidates, particularly in oncology and CNS research.
• Agrochemical Synthesis: Building block for creating enantiomerically pure herbicides, fungicides, and plant growth regulators with improved efficacy.
• Ligand & Catalyst Development: Precursor for synthesizing chiral ligands and organocatalysts used in asymmetric transformations.
• Fine Chemical Production: Intermediate in the multi-step synthesis of specialty chemicals, flavors, and fragrances requiring specific stereochemistry.
• Material Science Research: Monomer or precursor for developing chiral polymers and advanced organic materials with unique optical properties.
• Academic & Industrial R&D: Versatile tool for methodological development in organic chemistry and exploring new reaction pathways.

Basic Information

Product Name	(S)-4-Bromostyrene Oxide
CAS No.	148684-05-3
Molecular Formula	C8H7BrO
Molecular Weight	199.04 g/mol
Synonyms	(S)-4-Bromostyrene oxide; (S)-1-(4-Bromophenyl)oxirane; (S)-4-Bromo-α,β-epoxystyrene; (S)-2-(4-Bromophenyl)oxirane; (S)-p-Bromostyrene oxide; (S)-4-Bromophenylethylene oxide; (S)-4-Bromo-1,2-epoxyethylbenzene; (S)-4-Bromophenyloxirane
EINECS	Contact for details

Quality Control

Our (S)-4-Bromostyrene Oxide is manufactured under strict quality management systems to ensure batch-to-batch consistency and high enantiomeric purity. Each lot undergoes comprehensive analytical testing, including chiral HPLC for enantiomeric excess (ee) verification, NMR, and GC-MS for identity and purity confirmation. Certificates of Analysis (COA) detailing all specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at 2-8°C (refrigerated) or as specified on the label. This compound is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (e.g., nitrogen or argon) for prolonged storage to maintain stability and purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or low-melting solid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0%
Enantiomeric Excess (Chiral HPLC)	≥ 98.0% ee
Water Content (KF)	≤ 0.5%

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