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Lambda-cyhalothric acid

Common name Lambda-cyhalothric acid
CAS number 72748-35-7
Chemical Name Z-(1R,S)-cis-2,2-dimethyl-3-(2-chloro-3,3,3-trifluoro-1-propenyl)cyclopropanecarboxylic acid
Structural formula
Physical and chemical properties

Molecular formula: C9H10ClF3O2 
Molecular weight: 242.63 
Physicochemical properties 
Appearance: white crystalline powder. 
Content: 99% min. 
Moisture: 0.3% max 
Melting point: 107-109 ° C 
Density: 1.152 
Solubility: Pure product soluble in benzene, chloroform, ethyl acetate, etc., insoluble in water, soluble in alkaline solution:

Appearance White crystalline powder
Process introduction The guanidine ester (methyl ester and ethyl ester) is firstly reacted with trifluorotrichloroethane (F113A) to form a product, which is then subjected to cyclization, saponification, acidification, recrystallization, etc., and finally cis-form is obtained. Lambda-cyhalothric acid with a body content of 98% or more.
Application field It is used as an intermediate for the original drugs such as cyhalothrin, bifenthrin and tefluthrin. 
It is one of the important intermediates of synthetic pyrethroid insecticides, which can be used to synthesize highly efficient pyrethroids.
Chemical nickname 3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethylcyclopropanecarboxylic acid; Z-(1R,S)-cis-2,2-di Methyl-3-(2-chloro-3,3,3-trifluoro-1-propenyl)cyclopropanecarboxylic acid; kungfu chrysanthemic acid; 2,2-dimethyl-3-(2-chloro-3, 3,3-trifluoro-1-propenyl)-cyclopropane hydroxy acid; kung funic acid
Output 1000t/a
Packing 25KG/kraft paper bag/cardboard drum/composite bag, can be customized according to user needs.

 
 
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