hat
Pyrimidine se yon konpoze eterozikik aromik ki sanble ak pyridine. Youn nan twa diazines yo (heterocyclics sis-manm ak de atòm nitwojèn nan bag la), li gen atòm nitwojèn nan pozisyon 1 ak 3 nan bag la .: 250 lòt diazines yo se pirazin (atòm azòt nan pozisyon 1 ak 4) ak piridazin (atòm azòt nan pozisyon 1 ak 2). Nan asid nikleyè, twa kalite nukleobaz yo se dérivés pyrimidine: sitozin (C), thymin (T), ak uracil (U).
eng
Pyrimidine is an aromatic heterocyclic organic compound similar to pyridine. One of the three diazines (six-membered heterocyclics with two nitrogen atoms in the ring), it has the nitrogen atoms at positions 1 and 3 in the ring.:250 The other diazines are pyrazine (nitrogen atoms at the 1 and 4 positions) and pyridazine (nitrogen atoms at the 1 and 2 positions). In nucleic acids, three types of nucleobases are pyrimidine derivatives: cytosine (C), thymine (T), and uracil (U).