title: Separation and determination of diastereomers of lambda-cyhalothrin by normal phase-liquid chromatography using a CN column.
abstract: A simple and rapid normal-phase liquid-chromatographic method for the separation and determination of diastereomers of lambda-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 lambda-cyhalothrin for process development.
authors.affiliation: Analytical Chemistry Division, Indian Institute of Chemical Technology, Tarnaka, Hyderabad-500 007, India. rnrao@ins.iictnet.com
authors.forename: R Nageswara
authors.initials: RN
authors.lastname: Rao
authors.forename: B
authors.initials: B
authors.lastname: Shankaraiah
authors.forename: M Shyam
authors.initials: MS
authors.lastname: Sunder