https://www.selleckchem.com/pr....oducts/dl-alanine.ht
A rapid and sensitive method for the simultaneous determination of fipronil and fipronil sulfone (metabolite in livestock products was developed. The analytes were extracted from samples with acidic acetonitrile. The crude extracts were subjected to clean-up step using neutral alumina cartridge column. The HPLC separation was performed on a C18 column with isocratic elution of acetonitrile and ammonium formate solution. For the determination of the analytes, a tandem mass spectrometry with negative ion electrospray ionization was
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