ʻO Pyrimidine kahi mea'enela heterocyclic aromatic like me pyridine. ʻO kekahi o nā diazinesʻekolu (heterocyclics heʻeono mau meʻelua mau'eneola aʻa ma ke apo), iā ia nā nitrogen mau ma nā kūlana 1 a me 3 ma ke apo .:250ʻO nā diazine'ē aʻe he pyrazine (nā mana o ka nitrogen ma nā ipo 1 a me 4) a me pyridazine (nā'enela ma ka 1 a me ka 2). Ma nā nucleic acid,ʻekoluʻano o nā nucleobases he hua'ōlelo pyrimidine: cytosine (C), thymine (T), a me uracil (U).

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