Description

(1S)-2,2-Dimethyl-3β-(2-Methyl-1-Propenyl)Cyclopropane-1α-Carboxylic Acid (R)-1-Methyl-2-Allyl-3-Oxocyclopentene-5-Yl Ester is a high-purity, specialized chiral ester with a complex bicyclic structure. This compound is valued for its role as a critical synthetic intermediate in the production of advanced fine chemicals and active pharmaceutical ingredients (APIs). It is essential for research and manufacturing in the pharmaceutical, agrochemical, and specialty fragrance industries, where precise stereochemistry is paramount for product efficacy.

Application

• Pharmaceutical Intermediate: Key chiral building block for the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the research and development of advanced pesticides and herbicides with specific stereochemical activity.
• Fine Chemical Production: Serves as a precursor in the manufacture of specialty chemicals, flavors, and fragrances.
• Academic & Industrial Research: A valuable reagent for methodological development in organic synthesis and asymmetric catalysis.
• Material Science: Potential monomer or additive in the development of specialized polymers with unique properties.

Basic Information

Product Name	(1S)-2,2-Dimethyl-3β-(2-Methyl-1-Propenyl)Cyclopropane-1α-Carboxylic Acid (R)-1-Methyl-2-Allyl-3-Oxocyclopentene-5-Yl Ester
CAS No.	23453-09-0
Molecular Formula	C19H28O3
Molecular Weight	304.43 g/mol
Synonyms	Chrysanthemic acid allyl ester derivative; (1S,3R)-2,2-Dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropane-1-carboxylic acid (5R)-5-allyl-3-methyl-2-oxocyclopent-3-en-1-yl ester; (1R,3R)-2,2-Dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylic acid (R)-1-methyl-2-allyl-3-oxocyclopenten-5-yl ester; Pyrethroid intermediate; Allethrolone ester of chrysanthemic acid isomer; Synthetic pyrethroid precursor.
EINECS	Contact for details

Quality Control

Our production of this chiral intermediate adheres to strict quality management systems, ensuring batch-to-batch consistency and high chemical purity. Each lot is characterized using advanced analytical techniques including HPLC, GC, and chiral analysis to confirm identity, purity, and enantiomeric excess. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment. We support compliance with cGMP and ISO standards for pharmaceutical and industrial applications.

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/59-77°F). Due to its sensitivity to light and propensity for oxidation, it is recommended to store the product under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 97.0%
Enantiomeric Purity (Chiral HPLC)	≥ 98.0% ee
Related Substances (HPLC)	Total impurities ≤ 2.0%
Any single impurity	≤ 0.5%
Water Content (KF)	≤ 0.5% w/w
Residue on Ignition	≤ 0.1%

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