Fluorogenic substrates susceptible of fluorescence emission and photosensitization by enzyme transformation suitable for diagnosis and photodynamic treatment of tumors, consisting of fluorescent substances with photosensitization activity, chemically modified with a group quenching the fluorescence and...http://www.google.de/patents/US6036941?utm_source=gb-gplus-sharePatent US6036941 - Fluorogenic substrates for diagnosis and photodynamic treatment of tumors
