1 GP5 Diguanosine-pentaphosphate 1.000 2 G5P P1-(5'-adenosyl)-p5-(5'-guanosyl) pentaphosphate 0.950 3 AP5 Bis(adenosine)-5'-pentaphosphate 0.902 4 UP5 P1-(adenosine-5'-p5-(uridine-5')pentaphosphate 0.839 5 T5A P1-(5'-adenosyl)p5-(5'-thymidyl)pentaphosphate 0.810 6 Z5A P1-(5'-adenosyl)p5-(5'-(3'azido-3'-deoxythymidyl))pentaphosphate 0.758