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Paclobutrazol, with two stereogenic centers, but gives only (2R, 3R) and (2S, 3S)‐enantiomers because of steric‐hindrance effects, is an important plant growth regulator in agriculture and horticulture. Enantioselective degradation of paclobutrazol was investigated in rat liver microsomes in vitro. The degradation kinetics and the enantiomer fraction were determined using a Lux Cellulose‐1 chiral...
The enantioseparation and determination of isocarbophos enantiomers in orange pulp, peel, and kumquat by chiral HPLC tandem mass spectrometry (HPLC-MS/MS) are presented. Four cellulose-based chiral columns and two amylose-based columns were employed to explore the influence of chiral stationary phase on the enantioseparation selectivity and elution order of isocarbophos enantiomers. The fastest baseline...
In this study we investigated the enantioselective degradation of (2RS,3RS)‐paclobutrazol in peach and mandarin fruits under field conditions after foliar treatment at 500 mg active ingredient/L using a Lux Cellulose‐1 chiral column on a reverse‐phase liquid chromatography–tandem mass spectrometry system. Degradations of paclobutrazol in both fruits followed first‐order kinetics, with half‐lives of...
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