Description

Cyclopropane, 1-Bromo-1-Ethyl- (9Ci) CAS NO 80204-21-3 is a specialized halogenated cyclopropane derivative, a high-value building block in advanced organic synthesis. This compound is critical for introducing the strained, three-membered cyclopropane ring into target molecules, enabling the development of novel compounds with unique biological and physical properties. It is primarily utilized by research chemists and process development scientists in the pharmaceutical, agrochemical, and advanced materials sectors for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the research and development of active pharmaceutical ingredients (APIs), particularly for creating molecules with cyclopropane-based pharmacophores.
• Agrochemical Synthesis: Used in the synthesis of novel pesticides and herbicides, where the cyclopropane ring can enhance biological activity and environmental stability.
• Material Science Research: Acts as a precursor for developing specialty polymers and advanced organic materials with tailored electronic or structural properties.
• Organic Methodology Development: Employed in academic and industrial R&D labs to study and develop new cyclopropanation and cross-coupling reactions.
• Ligand and Catalyst Preparation: Utilized for synthesizing chiral ligands or organometallic catalysts containing the cyclopropane moiety.
• Fine Chemical Production: Incorporated into the multi-step synthesis of complex fragrance and flavor ingredients.

Basic Information

Item	Details
Product Name	Cyclopropane, 1-Bromo-1-Ethyl- (9Ci)
CAS No.	80204-21-3
Molecular Formula	C5H9Br
Molecular Weight	149.03 g/mol
Synonyms	1-Bromo-1-ethylcyclopropane; 1-Ethyl-1-bromocyclopropane; (1-Bromo-1-ethyl)cyclopropane; Ethylbromocyclopropane; NSC 169041; Cyclopropane, bromoethyl-; Bromoethylcyclopropane
EINECS	Contact for details

Quality Control

Our Cyclopropane, 1-Bromo-1-Ethyl- (9Ci) is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including chromatography (GC/HPLC) and spectroscopy (NMR, IR), to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical parameters are available upon request, supporting your regulatory and quality assurance requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its highly volatile nature, ensure containers are kept tightly sealed when not in use to prevent evaporation and concentration changes. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Purity (GC)	≥ 97.0% (Area %)
Water Content (KF)	≤ 0.5%
Density (at 20°C)	~1.35 g/mL
Refractive Index (n20/D)	~1.48

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