Abstract − Analytical Sciences, 20(12), 1745 (2004).
Separation and Determination of Diastereomers of λ-Cyhalothrin by Normal Phase-Liquid Chromatography Using a CN Column
R. Nageswara RAO,* B. SHANKARAIAH,** and M. Shyam SUNDER**
*Analytical Chemistry Division, Indian Institute of Chemical Technology, Tarnaka, Hyderabad-500 007, India
**Chemical Engineering Department, Indian Institute of Chemical Technology, Tarnaka, Hyderabad-500 007, India
**Chemical Engineering Department, Indian Institute of Chemical Technology, Tarnaka, Hyderabad-500 007, India
A simple and rapid normal-phase liquid-chromatographic method for the separation and determination of diastereomers of λ-cyhalothrin using a CN column and detection at UV-230 nm has been developed. This method has the advantage of totally resolving each of the diastereomers from impurities, such as meta-phenoxy benzaldehyde, cyhalothric acid and cyhalothric acid chloride, of technical and formulated materials, allowing one to monitor the low-temperature conversion of diastereomers of λ-cyhalothrin for process development.
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