Q. What is compound that is phosphorylated for ATP formation? What is resulting compound when ATP liberates energy?

adenosine triphosphate or ATP is formed after the binding of one phosphate (phosphorylation) to one ADP adenosine (diphosphate molecule) This is a process that stores energy into the produced ATP molecule.

When ATP gives energy to the cellular metabolism it loses one of its ADP and phosphates reappears.

ADP can also lose more phosphates and generate non- phosphorylated adenosine or even AMP (adenosine monophosphate). Adenosine production from ATP is a solution used in tissues that need urgent oxygen supply for instance, in the heart during myocardial infarction heart attack since adenosine has a local vasodilator effect thus providing faster vasodilation than other physiological methods.