Fluorogenic indicator compounds responsive to the presence of hydrogen peroxide and methods and test compositions for determining hydrogen peroxide in a test sample. Preferred indicator compounds are 3,4-dihydrocoumarin derivatives and 3,4-dihydro-2-quinolone derivatives, especially those having a dialkylamino group at the 7-position. Such particularly preferred compounds are of the formula: ##STR1## wherein R.sup.1 is hydrogen, cyano, or --COOR.sup.6, --CONHR.sup.6 or --CON(R.sup.6).sub.2 where R.sup.6 is hydrogen, alkyl, alkenyl, or aryl; R.sup.3 and R.sup.4 are lower alkyl; and Y is .dbd.0 or .dbd.N--R.sup.5 where R.sup.5 is hydrogen or lower alkyl. The indicator compounds yield highly fluorescent products upon oxidation by hydrogen peroxide in the presence of a peroxidatively active substance and are useful in analytical systems which generate hydrogen peroxide in response to an analyte under determination in a test sample.
对于存在
过氧化氢的荧光指示剂化合物,以及用于确定测试样品中
过氧化氢的方法和测试组成物。首选指示剂化合物是3,4-二氢
香豆素衍
生物和3,4-二氢-2-
喹啉衍
生物,特别是具有7-位置上的二烷基
氨基基团的化合物。这样特别优选的化合物的公式为:##STR1##其中R.sup.1是氢,
氰或--COOR.sup.6,--CONHR.sup.6或--CON(R.sup.6).sub.2,其中R.sup.6是氢,烷基,烯烃基或芳基;R.sup.3和R.sup.4是较低的烷基;Y是.dbd.0或.dbd.N--R.sup.5,其中R.sup.5是氢或较低的烷基。在存在
过氧化氢的过氧化物活性物质下,指示剂化合物通过氧化反应产生高度荧光的产物,并且在分析系统中非常有用,在该系统中,
过氧化氢是根据测试样品中的分析物而产生的。