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- An atom other than carbon in the structure of a heterocyclic compound. 雜環(huán)原子雜環(huán)化合物結構中的除了碳之外的原子
- "Heme, a complex heterocyclic compound, is an organic molecule derived from porphyrin with an iron atom at the centre. 血紅素（一種復雜的雜環(huán)化合物）是來(lái)自中心含鐵原子的的一種有機分子。
- A six-membered heterocyclic compound, such as pyridine, that contains one or more atoms of nitrogen with a ring structure resembling that of benzene. 吖?，連氮由六種元素構成的雜環(huán)化合物，如氮苯（吡啶），它由一個(gè)或更多的氮原子構成，呈環(huán)狀結構，類(lèi)似苯的結構
- By Hull cell test, a kind of anion surfactant and nitrogen heterocyclic compound was chosen as a additive for pulse non-cyanide silver electroplating. 采用赫爾槽試驗篩選出一種陰離子表面活性劑及含氮雜環(huán)化合物作為脈沖無(wú)氰鍍銀的添加劑,并初步確定了無(wú)氰鍍銀的工藝條件及脈沖條件。
- Hexahydroxy N-containing heterocyclic compound without sulfur and phosphorus was synthesized and its structure was characterized. 合成了無(wú)硫、磷的六元含氮雜環(huán)化合物添加劑。
- A six - membered heterocyclic compound,such as pyridine,that contains one or more atoms of nitrogen with a ring structure resembling that of benzene. 吖?，連氮由六種元素構成的雜環(huán)化合物，如氮苯(吡啶)，它由一個(gè)或更多的氮原子構成，呈環(huán)狀結構，類(lèi)似苯的結構
- Robert C. Elderfield. Heterocyclic Compounds [M]. 1952.Volume 4. 502-503. 花文廷.;雜環(huán)化合物[M]
- The pyrazoles ramification containing dithioether is synthesized by one-step method and characterized by H-NMR, IR and UV-Vis spectra. The heterocyclic compound can be applied in the field of pesticide. 摘要本文通過(guò)對反應的優(yōu)化，采用一步法合成出含有連二醚的吡唑衍生物。并采用氫核磁共振，紅外光譜和紫外吸收光譜等手段進(jìn)行了表征。這類(lèi)化合物有可能應用于農藥領(lǐng)域。
- The research direction and main operation includes four parts: Medicine material and chiral compound, organic acid and its ramification, heterocyclic compound and customizes products. 研究方向和主營(yíng)業(yè)務(wù)分為四部分：一、醫藥原料藥及手性中間體二、有機酸及其衍生物三、雜環(huán)化合物四、定制產(chǎn)品。
- Carbazole, a kind of nitro heterocyclic compound, was the main constituted part of the coal tar fraction.There was about 15% of the carbazoles contained in the high temperature coal tar. 摘要咔唑是一種含氮的雜環(huán)化合物，是煤焦油餾分中重要的組成部分，高溫煤焦油內約含咔唑1.;5%25。
- STUDY ON THE TRIBOLOGICAL PERFORMANCE AND ACTION MECHANISM OF HETEROCYCLIC COMPOUND CONTAINING BORON 含硼雜環(huán)化合物的摩擦學(xué)行為及作用機理研究
- The chemical behaviour of heterocyclic compounds is governed by the same factors that govern all chemical behaviour. 雜環(huán)化合物的各種反應與其它化學(xué)反應一樣，均為相同的因素所制約。
- We have, therefore, in both of the examples above, heterocyclic compounds with "built-in" or latent functionality. 上述兩例中的雜環(huán)化合物，都具有“固有的”或潛在的官能基。
- Purine: Any of a class of heterocyclic compounds with a two-ring structure composed of carbon and nitrogen atoms. 嘌呤:嘌呤是對由碳、氮原子組成的雙環(huán)結構的雜環(huán)化合物的統稱(chēng)。
- We have, therefore, in both of the examples above, heterocyclic compounds with " built-in " or latent functionality. 上述兩例中的雜環(huán)化合物，都具有“固有的”或潛在的官能基。
- Abstract Heterocyclic compounds generally possess important biological and chemical activities. 摘 要 雜環(huán)化合物一般都具有重要的生理活性。
- Any of a class of heterocyclic compounds based on the parent structure, uric acid, and used in medicine. 任何一種以母體結構和尿酸為基礎的雜環(huán)化合物，用于醫藥方面。
- Most researches focused on fulgide, diarylethene, spiropyran, spiroxaxine and other related heterocyclic compounds. 有機光致變色化合物的研究大都集中在俘精酸酐、二芳基乙烯、螺吡喃、螺惡嗪以及相關(guān)的雜環(huán)化合物上，同時(shí)也在繼續探索和發(fā)現新的光致變色體系。
- The results show that the high specificity and sensitivitiy of the GC-AED make it advantageous in analyses for these heterocyclic compounds. 結果表明該技術(shù)對有機含硫化合物的分析與檢測，具有高的靈敏度和強的選擇性，對原油中的含硫化合物能有效地分離和鑒定。
- Tetronic acid, tetronic amine and their derivatives are five-membered heterocyclic compounds along with bio- and pharmacological activities. 特窗酸、特窗胺及其衍生物均是生物活性很高的五員雜環(huán)化合物，具有重要的研究與實(shí)用價(jià)值。
