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HONGKUN / PRODUCT DIRECTORY

Cyhalothric acid (cis) | CAS 72748-35-7

A halogenated cyclopropanecarboxylic acid used in cyhalothrin-related pyrethroid chemistry, whose cis/trans relationship, alkene geometry and enantiomeric composition require separate qualification beyond a single chromatographic purity value.

CAS72748-35-7
Molecular formulaC9H10ClF3O2

Product overview

Cyhalothric acid supplies a cyclopropanecarboxylic-acid fragment for cyhalothrin-related pyrethroid ester chemistry. Its structure combines a gem-dimethylcyclopropane with a chloro-trifluoropropenyl side chain. The cis ring relationship, side-chain alkene geometry and enantiomeric composition each affect the material selected for an ester route. An enquiry should therefore include the required structural drawing and stereochemical composition. Qualification treats quantitative acid assay, cis/trans ratio and the relevant geometric or chiral measurements as separate acceptance criteria. These measurements define the acid component before it is combined with the alcohol fragment.

Chemical identity

Chemical name
cis-3-(2-Chloro-3,3,3-trifluoroprop-1-en-1-yl)-2,2-dimethylcyclopropanecarboxylic acid
CAS number
72748-35-7
Molecular formula
C9H10ClF3O2

Application context

Cyhalothric acid supplies the acid fragment in cyhalothrin-related pyrethroid ester chemistry, combined with an appropriate alcohol component. Match the ring cis/trans relationship, alkene geometry and optical composition to the intended ester route. Attach the required stereochemical structure to the enquiry and agree separate methods and reporting criteria for each relevant stereochemical attribute, alongside the quantitative acid assay.

Chemistry and synthetic role

The carboxyl function is the ester-forming handle. Ring stereochemistry and side-chain alkene geometry remain structural variables that must be specified independently of this functional role.

Quality review

Separate the stereochemical tests

Ask which method establishes cis/trans composition and which addresses alkene geometry; one overall area purity is insufficient.

Resolve the optical composition

Agree whether racemic material or a defined enantiomeric composition is required, supported by an appropriate chiral method.

State acid-content basis

Differentiate acid assay from chromatographic purity and clarify water or solvent corrections used for charge calculation.

Preparing a specification

Provide CAS, the desired cis structure including alkene geometry, any optical-composition requirement, acid assay basis and a method-specific stereoisomer profile. Avoid ordering solely by the word lambda.

Packaging and storage

Confirm packaging format, net weight and transport arrangements for the selected grade, order quantity and destination. Request the applicable SDS and label to establish storage and handling conditions.

Documentation

Request the proposed specification, batch COA and current SDS. Confirm availability of the identity data and analytical methods relevant to the checks above; documents depend on the selected manufacturer and grade.

Procurement questions

Which stereochemical details belong in the enquiry?

Include the cyclopropane cis/trans requirement, side-chain alkene geometry and required enantiomeric composition, supported by the intended structural drawing.

How do acid assay and cis content differ?

Acid assay measures content; cis/trans analysis measures the relative ring configurations. Report each against its own method and acceptance criterion.

What role does the carboxyl group play?

It provides the ester-forming function used to connect the acid fragment with the selected alcohol component.

Technical sources
  1. Lambda-cyhalothric acid J95527AK Scientific
  2. Lambda-cyhalothric acid CS-W008660ChemScene
  3. Determining the solubility and understanding the solid-liquid equilibrium behavior of cyhalothric acid in eleven pure solventsJournal of Molecular Liquids / Elsevier