Diadenosine pentaphosphate pentalithium is an endogenous vasoactive purine dinucleotide, isolated from thrombocytes. It is a member of the diadenosine polyphosphates (ApnA, n=2–7) and is found in secretory vesicles of platelets, chromaffin cells, Torpedo synaptic terminals, and brain synaptosomes.
Diadenosine pentaphosphate pentaammonium, an endogenous vasoactive purine dinucleotide isolated from thrombocytes, is one component of the diadenosine polyphosphates (ApnA, n=2-7) family. These compounds are found in secretory vesicles, including those in platelets, chromaffin cells, Torpedo synaptic terminals, and brain synaptosomes[1][2].