Phosphocreatine dipotassium, primarily found in the skeletal muscles of vertebrates and one of organic compounds known as alpha amino acids and derivatives.
Cyclocreatine, a Creatine analogue, exhibits potent bioenergetic protection by elevating ATP levels. It demonstrates the ability to traverse cell membranes, including the blood-brain barrier, wherein it undergoes phosphorylation and dephosphorylation by creatine kinases.