
吡咯 - 维基百科,自由的百科全书
吡 bǐ 咯 luò (英語: pyrrole) [2] 是一种含有一个氮原子和两个共轭双键的五元芳香 杂环化合物,化学式为C 4 H 4 NH [3]。 吡咯为一种无色挥发性液体,暴露在空气中很容易变黑。 在 生物化学 中,五元环至少含两个杂原子的吡咯衍生物称为“ 唑 ”(氮杂 茂 的英文发音之缩读的汉译),且 唑 只专用于此类吡咯衍生物的尾部词缀;但是在化学系统命名法中, 唑 (氮杂茂)亦指吡咯本身。 多个吡咯环可以形成更大的环系,如 血红蛋白 中的 卟啉 环, 叶绿素 中的 卟吩 环和 维生 …
Pyrrole - Wikipedia
Pyrrole is a heterocyclic, aromatic, organic compound, a five-membered ring with the formula C 4 H 4 NH. [3] It is a colorless volatile liquid that darkens readily upon exposure to air. Substituted derivatives are also called pyrroles, e.g., N -methylpyrrole, C 4 H 4 NCH 3 .
吡咯 - 百度百科
吡咯是含有一个氮杂 原子 的五元 杂环化合物,其分子式为C4H5N,无色液体,沸点130~131℃, 相对密度 0.9691(20/4℃)。 微溶于水,易溶于 乙醇 、乙醚等有机溶剂。 吡咯及其 同系物 主要存在于骨焦油中, 煤焦油 中存在的量很少,可由骨焦油分馏取得;或用稀碱处理骨焦油,再用酸酸化后分馏提纯。 吡咯及其甲基取代的同系物存在于骨焦油内。 无色液体。 沸点130~131℃,相对密度0.9691(20/4℃)。 微溶于水,易溶于乙醇、乙醚等有机溶剂。 吡咯 …
Pyrrole | C4H5N | CID 8027 - PubChem
It is a pyrrole and a secondary amine. It is a tautomer of a 2H-pyrrole and a 3H-pyrrole. Pyrrole has been reported in Zea mays, Nicotiana tabacum, and other organisms with data available. PYRROLE is a small molecule drug with a maximum clinical trial phase of III and has 1 investigational indication. View More... See also: ... View More ...
吡咯_化工百科 - ChemBK
吡咯广泛用于合成医药、农药和染料。 在医药工业上可以用于合成依洛沙星 (irloxacin)、吡咯米酸 ( piromidic)、吡咯戊酮 (pyrovalerone)、吡咯卡因 ( pyrrocaine)以及病灭定 (TMT)等。 毒性:LD50 (mg/kg):大鼠经口61。 健康危害:吸入蒸气可致麻醉,并可引起体温持续增高。 燃爆危险:本品易燃,具刺激性。 危险特性:其蒸气与空气可形成爆炸性混合物,遇明火、高热能引起燃烧爆炸。 与氧化剂可发生反应。 高温时分解,释出剧毒的氮氧化物气体。 流速过快,容易产生和积聚 …
Pyrrole | Aromatic, Heterocyclic, Nitrogen-Containing | Britannica
pyrrole, any of a class of organic compounds of the heterocyclic series characterized by a ring structure composed of four carbon atoms and one nitrogen atom. The simplest member of the pyrrole family is pyrrole itself, a compound with molecular formula C 4 H 5 N.
吡咯 CAS#: 109-97-7 - ChemicalBook
吡咯是血红素、叶绿素、胆汁色素、某些氨基酸、若干生物碱及一些酶的基本结构单元,这些化合物具有很强的生理活性与药物功能。 维生素B12、胃长宁、海人草酸 (驱蛔虫药)、林可霉素 (抗菌素)等药物均含有氢化吡咯环状结构。 1979年以后,发现吡咯经电化学氧化可制得柔性导电高分子薄膜,电导率达104S/m,并具有良好的稳定性。 按GT-10-4中用极性柱进行气相色谱法测定。 GRAS (FEMA)。 LD50 61mg/kg (小鼠,皮下)。 FEMA (mg/kg):冷饮3.0;糖果3.0;焙烤食 …
Pyrroles - Chemistry Online
2024年4月22日 · Pyrroles are 5-membered heterocyclic aromatic compounds with one nitrogen atom and 4 carbons in a pentagonal ring. Apart from its interest as an aromatic system, the pyrrole is biologically important because its structure is part of the heme group, chlorophyll and other natural products related to vitamin B12 and bile pigments.
Pyrrole: An insight into recent pharmacological advances with structure ...
2018年9月5日 · Pyrrole is a heterocyclic ring template with multiple pharmacophores that provides a way for the generation of library of enormous lead molecules. Owing to its vast pharmacological profile, pyrrole and its analogues have drawn much attention of the researchers/chemists round the globe to be explored exhaustively for the benefit of mankind.
Pyrrole | Formula, Properties & Application
Pyrrole is a fascinating heterocyclic organic compound that has established itself as a cornerstone of both the natural and synthetic chemistry world. Comprised of a five-membered ring structure, with four carbon atoms and one nitrogen atom, this compound is renowned for its aromatic properties, which can be attributed to the presence of a ...