Pyrimidines | 合法藥品大搜索

嘧啶（C4H4N2，1,3-二氮雜苯，英文：Pyrimidine）係一種雜環化合物，佢由兩個氮原子取代苯分子間位上嘅兩個碳而成，係一隻二嗪。但同吡啶一樣都有芳香性 ... Read More

Pyrimidine is an aromatic heterocyclic organic compound similar to pyridine. ... One of the three diazines (six-membered heterocyclics with two nitrogen atoms in the ... Read More

一、嘧啶核苷酸(pyrimidine nucleotide)合成 1.de novo pathways. A. 首先形成中間物UMP，第二步才是將UMP轉換成CTP或dTMP ※比較：嘌呤核苷酸合成的de ... Read More

Pyrimidine is one of two classes of heterocyclic nitrogenous bases found in the nucleic acids DNA and RNA: in DNA the pyrimidines are cytosine and thymine, in ... Read More

Abstract. The pyrimidine ring is an aromatic heterocycle of two nitrogen and four carbon atoms. The numbering of atoms is done in a clockwise direction. Nitrogen ... Read More

Pyrimidine. Pyrimidines are a well-known structural moiety present in numerous bioactive compounds and in three of the five major bases of nucleic acids (thymine ... Read More

Pyrimidines are structural components in many natural compounds, such as nucleotides, nucleic acids, vitamins, pterins, and antibiotics. In all organisms, ... Read More