3-Bromomethyl-6,7-methylenedioxy-1-methyl-2(1H)-quinoxalinone as a highly sensitive fluorescence derivatization reagent for carboxylic acids in high-performance liquid chromatography.
作者:MASATOSHI YAMAGUCHI、OSAMU TAKEHIRO、SHUUJI HARA、MASARU NAKAMURA、YOSUKE OHKURA
DOI:10.1248/cpb.36.2263
日期:——
3-Bromomethyl-6, 7-methylenedioxy-1-methyl-2(1H)-quinoxalinone was found to be a highly sensitive fluorescence derivatization reagent for carboxylic acids in high-performance liquid chromatography. Its reaction conditions were optimized for various linear C3-C20 saturated fatty acids. The reagent reacts with the fatty acids in acetonitrile in the presence of 18-crown-6 and potassium carbonate to produce the corresponding fluorescent derivatives, which can be separated on a reversed-phase column, Radial-Pak C18 cartridge, by gradient elution with 35-100% (v/v) aqueous methanol. The detection limits for the acids were 0.2-0.8 fmol for an injection volume of 10μl.
3-溴甲基-6, 7-亚甲二氧基-1-甲基-2(1H)-喹喔啉酮被发现是一种高效能液相色谱(HPLC)中对羧酸的高灵敏度荧光衍生化试剂。其反应条件已针对多种线性C3-C20饱和脂肪酸进行了优化。该试剂在含有18-冠-6和碳酸钾的乙腈中与脂肪酸反应,产生相应的荧光衍生物,并可以通过梯度洗脱在反相色谱柱Radial-Pak C18滤 cartridges上进行分离,洗脱液为35-100%(v/v)水性甲醇。对于这些酸,检测限为0.2-0.8 fmol,注入体积为10μl。