Tin Ethyl Etiopurpurin

**Semantic type:** Organic Chemical|Pharmacologic Substance

**Definition:** A synthetic purpurin with photosensitizing activity. Tin ethyl etiopurpurin preferentially accumulates in tumor cells due to an increased rate of metabolism. Upon exposure to a light source, this agent absorbs light, forming an extended high energy conformational state that produces high quantum yields of singlet oxygen with local cytotoxic effects. (NCI04)

**Synonyms:** - DRG-0268 - SnET2 - SnET2 - Tin, (ethyl tetramethyl-20-phorbinecarboxylato(2-)-N23,N24,N25,N26)-, (SP-4-2)- - tin ethyl etiopurpurin