Novel heterocyclic compounds which generate chemiluminescence on reaction with a phosphatase enzyme are provided as well as a process for their preparation and intermediates useful therein. The compounds comprise a nitrogen, oxygen or sulfur-containing heterocyclic ring system bearing an exocyclic carbon--carbon...http://www.google.de/patents/US6296787?utm_source=gb-gplus-sharePatent US6296787 - Compounds, compositions and methods for generating chemiluminescence with phosphatase enzymes
