A neurotransmitter that makes you sleepy. Also made when adenosine triphosphate gets used for energy.

A white, odorless, crystalline powder, C5H4N5·C5H9O4, obtained from the hydrolysis of yeast nucleic acid. It is a nucleoside consisting of adenine and ribose.

See also: ADP, AMP, ATP

Y'know, if you log in, you can write something here, or contact authors directly on the site. Create a New User if you don't already have an account.