Highly hydrophilic indole and benzoindole derivatives that absorb and fluoresce in the visible region of light are disclosed. These compounds are useful for physiological and organ function monitoring. Particularly, the molecules of the invention are useful for optical diagnosis of renal and cardiac...http://www.google.se/patents/US7608244?utm_source=gb-gplus-sharePatent US7608244 - Hydrophilic light absorbing compositions for determination of physiological function in critically ill patients
