The present invention provides various covalently modified sapphyrin derivatives and conjugates, and also, polymers including sapphyrin or derivatives thereof. Disclosed are water soluble sapphyrins, including polyhydroxysapphyrins and sapphyrin-sugar derivatives; sapphyrin-metal chelating conjugates;...http://www.google.fr/patents/US5530123?utm_source=gb-gplus-shareBrevet US5530123 - Sapphyrin chelator derivatives
