Description

Cyclopropanecarbonyl Chloride, 2-(1,3-Butadienyl)-, [1Alpha,2Beta(E)]- (9Ci) CAS NO 100678-76-0 is a specialized, high-value organic intermediate featuring a reactive acid chloride group and a conjugated diene system. This unique molecular architecture makes it a critical building block for synthesizing complex molecules in advanced research and development. It is primarily sought after by pharmaceutical and agrochemical R&D teams for constructing novel active compounds, particularly those requiring a cyclopropane scaffold. Its precise stereochemistry and functional groups enable the creation of targeted molecular structures with specific biological or chemical properties.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), especially for candidates targeting central nervous system (CNS) disorders, anti-infectives, or oncology.
• Agrochemical Synthesis: Used in the research and development of new-generation pesticides and herbicides, where the cyclopropane ring can confer specific biological activity and stability.
• Material Science Research: Serves as a monomer or cross-linking agent in the development of specialty polymers with unique thermal or mechanical properties.
• Chemical Biology & Probe Development: Employed to create molecular probes and tool compounds for studying enzyme mechanisms or biological pathways due to its reactive handles.
• Academic & Contract Research: Essential for synthetic organic chemistry research in universities and CROs (Contract Research Organizations) exploring new reaction methodologies and complex natural product analogs.

Basic Information

Product Name	Cyclopropanecarbonyl Chloride, 2-(1,3-Butadienyl)-, [1Alpha,2Beta(E)]- (9Ci)
CAS No.	100678-76-0
Molecular Formula	C8H9ClO
Molecular Weight	156.61 g/mol
Synonyms	(1R,2S)-2-[(1E)-1,3-Butadien-1-yl]cyclopropanecarbonyl chloride; (1R,2S)-rel-2-[(1E)-1,3-Butadien-1-yl]cyclopropanecarbonyl chloride; 2-[(1E)-1,3-Butadien-1-yl]cyclopropanecarbonyl chloride, (1R,2S)-rel-; [1α,2β(E)]-2-(1,3-Butadienyl)cyclopropanecarbonyl chloride; (1R-cis)-2-[(1E)-1,3-Butadienyl]cyclopropanecarbonyl Chloride
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity suitable for sensitive R&D applications. Each lot is characterized using advanced analytical techniques including NMR, HPLC, and GC-MS. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment. We support development projects requiring material for regulatory filings with appropriate documentation.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place. Due to its hygroscopic (moisture-sensitive) nature and reactivity as an acid chloride, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening. Recommended storage temperature is 2-8°C for long-term stability. Keep away from strong bases, oxidizing agents, and moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Specific Rotation	Contact for details

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