Electrophilic and nucleophilic substitution reactions of 8-pyridyl-and 8-(1-methylpyridinio)-purines.
D055598:Chemical Phenomena; D002621:Chemistry; D007042:Hypoxanthines / Q000138:chemical synthesis; D015122:Mercaptopurine / Q000138:chemical synthesis; D011687:Purines; D011725:Pyridines; D013053:Spectrophotometry
D007042:Hypoxanthines; D011687:Purines; D011725:Pyridines; D015122:Mercaptopurine