Description

trans-(+)-Chrysanthemic Acid is a high-purity, optically active cyclopropanecarboxylic acid derivative that serves as a critical chiral intermediate in advanced chemical synthesis. Its value lies in its role as a key building block for the production of synthetic pyrethroids, a major class of insecticides known for their efficacy and favorable environmental profile. This compound is essential for manufacturers and R&D laboratories in the agrochemical and pharmaceutical industries seeking to develop or produce high-performance, stereospecific active ingredients.

Application

• Synthetic Pyrethroid Production: Primary chiral precursor for insecticides such as allethrin, phenothrin, and tetramethrin.
• Agrochemical Intermediate: Key building block in the synthesis of next-generation, stereochemically pure insect control agents.
• Pharmaceutical Research: Valuable chiral synthon for developing novel active pharmaceutical ingredients (APIs) with specific stereochemistry.
• Fine Chemical Synthesis: Used in asymmetric synthesis and the preparation of complex organic molecules requiring the cyclopropane moiety.
• Biochemical Studies: Employed as a standard or reagent in studies related to insect physiology and neurotoxicology.

Basic Information

Product Name	trans-(+)-Chrysanthemic Acid
CAS No.	4638-92-0
Molecular Formula	C10H16O2
Molecular Weight	168.23 g/mol
Synonyms	(1R,3R)-2,2-Dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropane-1-carboxylic Acid; (+)-trans-Chrysanthemic Acid; (1R,3R)-Chrysanthemic Acid; (1R,3R)-2,2-Dimethyl-3-(2-methylpropenyl)cyclopropanecarboxylic Acid; (1R,3R)-2,2-Dimethyl-3-isobutenylcyclopropanecarboxylic Acid; d-trans-Chrysanthemic Acid; (1R,3R)-Chrysanthemumsäure
EINECS	225-064-8

Quality Control

Our trans-(+)-Chrysanthemic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity analysis by HPLC, to ensure it meets exacting specifications for use in high-value synthesis. Certificates of Analysis (COA) documenting identity, purity, and enantiomeric excess are provided and available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from strong bases and oxidizing agents. Due to its acidic nature, ensure containers are made of compatible materials and are properly sealed.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Enantiomeric Excess (Chiral HPLC)	≥ 99.0%
Melting Point	48 - 52 °C
Specific Rotation [α]20/D	+14° to +18° (c=1 in ethanol)
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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