adenine
adenosine
cytosine
cytidine
guanine
guanosine
thymine
thymidine
uracil
uridine
adenosine-5’-monophosphate (5’-AMP)
adenosine- -5’-diphosphate (5’-ADP or ADP)
adenosine- -5’-triphosphate (5’-ATP or`ATP)
adenosine-3’,5’-cys monophosphate G 5’-cAMP or cAMP)
inosine
hypoxanthine
xanthine
uric acid
UDP
ribose-5-phosphate