Electrogenerated Chemiluminescence Derivatization Reagent, 3-Isobutyl-9,10-dimethoxy-1,3,4,6,7,11b- hexahydro-2<i>H</i>-pyrido[2,1-<i>a</i>]isoquinolin-2-ylamine, for Carboxylic Acid in High-Performance Liquid Chromatography Using Tris(2,2‘-bipyridine)ruthenium(II)
作者:Hirotoshi Morita、Masaharu Konishi
DOI:10.1021/ac020377i
日期:2003.2.1
sensitive derivatization reagent for carboxylic acid by high-performance liquid chromatography (HPLC) with electrogenerated chemiluminescence detection using tris(2,2'-bipyridine)ruthenium(II). Free fatty acids and phenylbutylic acid were used as model compounds of carboxylic acids, and the derivatization conditions were optimized with myristic acid. Under the mild reaction conditions of room temperature
3-异丁基-9,10-二甲氧基-1,3,4,6,7,11b-六氢-2H-吡啶并[2,1-a]异喹啉-2-基胺 (IDHPIA)使用三(2,2'-联吡啶)钌(II)通过高效液相色谱(HPLC)和电化学发光检测检测羧酸的灵敏衍生试剂。以游离脂肪酸和苯基丁酸作为羧酸的模型化合物,并以肉豆蔻酸优化衍生条件。在含有2-溴-1-乙基吡啶鎓四氟硼酸盐和9-甲基-3,4-二氢-2H-吡啶1,2-a]嘧啶-2-one的乙腈中,在室温温和反应条件下45 min,所有脂肪测试的酸与 IDHPIA 反应产生高度敏感的衍生物。所有脂肪酸的化学发光强度基本相同。从 10 种游离脂肪酸中获得的衍生物在等度洗脱条件下通过反相色谱完全分离。使用建议的 HPLC 分离和化学发光检测,肉豆蔻酸和苯基丁酸的柱上检测限(信噪比为 3)分别为 0.5 和 0.6 fmol。IDHPIA 比以前开发的试剂敏感 100 倍 (Morita