6,7-Dimethoxy-1-methyl-2-oxo-1,2-dihydroquinoxalin-3-ylpropiono-hydrazide as a fluorescence derivatization reagent for aldehydes in high-performance liquid chromatographyIwata, Tetsuharu; Hirose, Tsuyoshi; Nakamura, Masaru; Yamaguchi, Masatoshi · The Analyst · 1993

4-(1-Methylphenanthro[9,10-d]imidazol-2-yl)-benzohydrazide as derivatization reagent for carboxylic acids in high-performance liquid chromatography with conventional and laser-induced fluorescence detectionIwata, Tetsuharu; Hirose, Tsuyoshi; Nakamura, Masaru; Yamaguchi, Masatoshi · The Analyst · 1994