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HPLC fluorometric methods have been used to analyze trace amounts of d-amino acids in biological samples. In this study, we established an expedient column-switching fluorometric HPLC system that would improve the analysis of d-amino acids, in particular d-aspartate (Asp). Our system consists of the fluorogenic derivatization of amino acids with NBD-F and two chromatographic steps, one that separates...
A simple and selective method for the determination of anandamide (arachidonoylethanolamide), an endogenous cannabinoid receptor ligand, and its analogs with liquid chromatography-atmospheric pressure chemical ionization mass spectrometry (LC-APCI-MS) was developed. The calibration curve for standard anandamide was linear over the range 625 fmol-125 pmol per injection (r=0.999) with a precision of...
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