3-Cyano-7-ethoxycoumarin is a fluorogenic cytochrome P-450 substrate that generates blue fluorescent product upon enzyme cleavage Target: Cytochrome P450 3-Cyano-7-ethoxycoumarin is a fluorescent probe useful in microsomal dealkylase studies. 3-Cyano-7-ethoxycoumarin is a high purity and quality chemical used as molecular probe.Typical drug-drug interactions resulting from enzyme inhibition.