SEARCH Articles Figures Tables 1,2,4-Triazine derivatives, pyrimidine base analogs Approach Based on Analogy between Momentum and Mass Transfer Aza analogs, of pyrimidine and purine bases Aza-analogs of purine bases Aza-analogs of pyrimidine bases Base analog incorporation into Chemistry bases and their analogs Lactam-Based Analogs Porphyrins free base analogs Purine bases aza analogs Pyrimidine bases aza analogs