聚磷酸腺苷衍生物，存储在血小板，嗜铬细胞和神经元细胞的分泌颗粒中。已显示在体​​外起胰腺细胞次级信使，磷脂酶D刺激物，改变细胞内钙水平，一氧化氮释放诱导剂，5'-核苷酸酶激活剂和腺苷激酶活性抑制剂的作用。 用途 P1,P4-二（腺苷-5′）四磷酸铵盐已被用作nudix水解的底物。它还可用作ATP类似物以及切割因子II Im25亚基的nudix底物. A derivative of Diadenosine polyphosphate, which is stored in secretory granules of thrombocytes, chromaffin, and neuronal cells. Has been shown to function as a pancreatic cell secondary messenger, phospholipase D stimulator, change intracellular calcium levels, nitric oxide release inductor, 5′-nucleotidase activator and adenosine kinase activity inhibitor in vitro. Purpose P1,P4-Di(adenosine-5′) tetraphosphate ammonium salt has been used as a substrate for nudix hydrolyse. It has also been used as a ATP analog and nudix substrate for cleavage factor II Im25 subunit.