4-AMINO-5-METHOXYTOLUENE-2-SUL

Amino Acid Analysis by High-Performance Liquid Chromatography after Derivatization with 1-Fluoro-2,4-Dinitrophenyl-5-L-Alanine Amide (Marfey's Rea

Precolumn derivatization of amino acids followed by their resolution by reverse-phase high-performance liquid chromatography (RP-HPLC) is now the preferred method for quantitative amino acid analysis. The derivatization step introduces

Automated Amino Acid Analysis

a purple color with amino acids, a pink or yellor color with amino acids, and various intermediate colors with compounds containing an amino group and a sulfonic acid, and so on. It also reacts with small peptides such as glutathione

尿刊酸 urocanic acid

β-咪唑丙烯酸。给予狗大量的组氨酸后可从尿中得到，还有细菌作用于组氨酸也能生成尿刊酸。在哺乳类的肝脏或细菌中作为从组氨酸到谷氨酸的代谢途径的中间体，在组氨酸酶的作用下进行分子内的无氧脱氨基而生成。通常尿刊酸在肝脏酶（尿刊酸酶）的作用下进一步分解转变成谷氨酸。