Class/mechanism: Photosensitizing agent used in photodynamic therapy (PDT), comprised of a mixture of oligomers formed by ether and ester linkages of up to eight porphyrin units. Light from photodynamic therapy excites porphyrin and results in the propagation of radical reactions, including the formation of superoxide and hydroxyl radicals. Ischemic necrosis due to vascular occlusion thought to be mediated by thromboxane A2 (TXA2) release and has also been observed.
Extravasation: no information
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