circular dichroism , absorbance , hypochromicity , and the formation of mg2+ and zn2+ complexes have been measured for a series of bisnucleoside oligophosphates that contain adenosine , guanosine , and mixed guanosine/adenosine , guanosine/cytidine , and guanosine/uridine , as well as 7-methylguanosine and ribose-methylated purine nucleosides .
C0001443
adenosine
C0034136
purine nucleosides