 Porfimer sodium

Porfimer sodium, sold as Photofrin, is a photosensitizer used in photodynamic therapy and radiation therapy and for palliative treatment of obstructing endobronchial non-small cell lung carcinoma and obstructing esophageal cancer.Porfimer is a mixture of oligomers formed by ether and ester linkages of up to eight porphyrin units.