Compounds of the formula ##STR1## wherein R.sub.1 is lower alkyl or phenyl lower alkyl: R.sub.2 is phenyl or substituted phenyl: and R.sub.3 is substituted or unsubstituted phenyl, naphthyl or indolyl; Are fluorogenic reagents which react with primary amino groups to form fluorophors. The above compounds are useful for fluorescent labeling of materials of biological importance.
化合物的公式为##STR1##其中 R.sub.1是低烷基或苯基低烷基:R.sub.2是苯基或取代苯基:R.sub.3是取代或未取代的苯基,
萘基或
吲哚基。这些化合物是荧光试剂,可与一级
氨基反应形成荧光物质。以上化合物可用于
生物重要材料的荧光标记。