英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字,中文词皆可:



安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Pyrimidine - Wikipedia
    The pyrimidine nitrogen bases found in DNA and RNA Three nucleobases found in nucleic acids, cytosine (C), thymine (T), and uracil (U), are pyrimidine derivatives:
  • 嘧啶 - 百度百科
    嘧啶(Pyrimidine),化学式C₄H₄N₂,CAS号289-95-2,别称1,3-二氮杂苯或间二嗪,摩尔质量80 09 g mol。 常温下呈液态,熔点20-22℃,沸点123-124℃,具水溶性和弱碱性,与苦味酸、草酸可形成结晶化合物。 分子结构含两个间位氮原子,保留芳香性,难发生亲电取代反应。
  • Purines and Pyrimidines
    The name “pyrimidine” reflects the compound’s origin in the breakdown of organic materials at high temperatures (hence, “pyr” for fire) Just like purines, pyrimidines were first identified and isolated in the late 19th century
  • Pyrimidine | C4H4N2 | CID 9260 - PubChem
    Pyrimidine is the parent compound of the pyrimidines; a diazine having the two nitrogens at the 1- and 3-positions It has a role as a Daphnia magna metabolite It is a diazine and a member of pyrimidines
  • Recent Progress in the Synthesis, Functionalization, and Biological . . .
    Since the versatility of pyrimidine has grown to greater heights, the aim or target of this review is to focus on the latest progress in the synthetic chemistry and biological importance of pyrimidine-containing heterocyclic hybrids
  • Pyrimidine | Nucleobases, DNA, RNA | Britannica
    pyrimidine, any of a class of organic compounds of the heterocyclic series characterized by a ring structure composed of four carbon atoms and two nitrogen atoms The simplest member of the family is pyrimidine itself, with molecular formula C 4 H 4 N 2
  • Pyrimidine- Definition, Properties, Structure, Uses - Microbe Notes
    Pyrimidine is a class of organic heterocyclic compounds containing 2 nitrogen atoms in their carbon ring Pyrimidines are defined as polyunsaturated six-membered aromatic heterocyclic compounds containing two nitrogen atoms at the 1, 3 – position of the ring
  • Pyrimidines: A New Versatile Molecule in the Drug Development Field . . .
    In this review, we have focused on various pharmacological properties of pyrimidine and pyrimidine-containing compounds There have been recent developments in the pyrimidines against various targets, such as EGFR, HDAC, and CDKs
  • 嘧啶 - 維基百科,自由的百科全書
    嘧 ㄇㄧˋ 啶 ㄉㄧㄥˋ (英語: pyrimidine)是一種含二氮的 雜環 芳香化合物,分子式為C 4 H 4 N 2。 嘧啶由2個 氮 原子取代 苯 分子間位上的2個 碳 形成,是一種 二嗪;和 吡啶 一樣,嘧啶保留了 芳香性。 嘧啶與 嘌呤 同為 核酸 中最重要的組成部分。
  • Pyrimidine - an overview | ScienceDirect Topics
    Pyrimidine derivatives such as cytosine, adenine, uracil, guanine and thymine are primary structural units of DNA and RNA which emphasize the fact that pyrimidine falls under a special class of compounds for drug research and development [36a]





中文字典-英文字典  2005-2009