Porphyrin Systems GbR is a company engaged in synthesis and investigation of porphyrins and related compounds. The company was founded in January 1999 in Lübeck, Germany. Research at Porphyrin Systems is focused on the development of new porphyrinic photosensitizers for photodynamic therapy of cancer (PDT). In this field, the company cooperates with the Medical Laser Center Lübeck GmbH and with partners at other German and European institutes and universities. Furthermore, the company is interes...