Adenosine Cyclic 3',5' Monophosphate

An Adenine nucleotide containing one phosphate group which is esterified to both the 3'- and 5'-positions of the sugar moiety. It is a Second Messenger and a key intracellular regulator, functioning as a mediator of activity for a number of Hormones, including Epinephrine, Glucagon, and ACTH.