Description

Cyclopropanecarbonyl Chloride, 2-Methyl-2-(1-Methylethenyl)-, trans- (9Ci) CAS NO 86133-44-0 is a specialized, high-purity organic intermediate featuring a reactive acid chloride functional group attached to a substituted cyclopropane ring. This compound is valued for its unique sterically hindered structure, which enables the synthesis of complex molecules with specific stereochemistry and functional properties. It is primarily sought by research and development chemists and process engineers in the pharmaceutical and agrochemical industries for constructing novel active ingredients.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of proprietary drug candidates, particularly those requiring cyclopropane motifs for bioactivity or metabolic stability.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides and herbicides, where its structure contributes to specific modes of action.
• Advanced Material Precursor: Serves as a monomer or cross-linking agent in the development of specialty polymers with tailored thermal or mechanical properties.
• Organic Synthesis Reagent: Employed in academic and industrial R&D labs for constructing complex natural products and exploring new chemical methodologies.
• Flavor & Fragrance Chemistry: Potential intermediate for creating novel synthetic aroma chemicals with unique olfactory characteristics.

Basic Information

Product Name	Cyclopropanecarbonyl Chloride, 2-Methyl-2-(1-Methylethenyl)-, trans- (9Ci)
CAS No.	86133-44-0
Molecular Formula	C10H15ClO
Molecular Weight	186.68 g/mol
Synonyms	trans-2-Methyl-2-(1-methylethenyl)cyclopropanecarbonyl chloride; (1R,2S)-rel-2-Methyl-2-(1-methylethenyl)cyclopropanecarboxylic acid chloride; Chrysanthemic acid chloride, trans-; 2-Methyl-2-(prop-1-en-2-yl)cyclopropane-1-carbonyl chloride (trans-); Chrysanthemoyl chloride (trans- isomer); Cyclopropanecarboxylic acid, 2-methyl-2-(1-methylethenyl)-, chloride, (1R,2S)-rel-
EINECS	Contact for details

Quality Control

Our production of Cyclopropanecarbonyl Chloride, 2-Methyl-2-(1-Methylethenyl)-, trans- adheres to stringent internal quality protocols to ensure batch-to-batch consistency and high purity suitable for sensitive synthetic applications. Each lot is analyzed via modern analytical techniques including GC, HPLC, and NMR spectroscopy. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic and moisture-sensitive nature, containers must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis and maintain product integrity. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases, alcohols, and amines.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (GC)	≥ 97.0% (Area %)
Purity (HPLC)	≥ 96.0%
Isomeric Purity (trans-)	≥ 98.0%
Water Content (KF)	≤ 0.5%

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