guanidine
enUKgua·ni·dine
G0295600 (gwä′nĭ-dēn′)guanidine
(ˈɡwɑːnɪˌdiːn; -dɪn; ˈɡwænɪ-) orguanidin
guan•i•dine
(ˈgwæn ɪˌdin, -dɪn, ˈgwɑ nɪ-)n.
单词 | guanidine |
释义 | guanidineenUKgua·ni·dineG0295600 (gwä′nĭ-dēn′)guanidine(ˈɡwɑːnɪˌdiːn; -dɪn; ˈɡwænɪ-) orguanidinguan•i•dine(ˈgwæn ɪˌdin, -dɪn, ˈgwɑ nɪ-)n. GuanidineenUKguanidine[′gwän·ə‚dēn]Guanidine(also carbamidine). (H2N)2C=NH, colorless hygroscopic crystals; melting point, approximately 50° C. Guanidine absorbs C02 and moisture from the air and forms salts with acids. On hydrolysis it gives urea and ammonia. Guanidine (or its salts) is obtained by reacting cyanamide with ammonia (or with ammonium salts). H2N—C≡N + NH3→(H2N)2C═NH H2N —C≡N +NH4Cl→(H2N)2C═NH.HCI Guanidine is used to obtain medicinal and explosive substances and ion-exchange resins. A guanidine fragment enters into the composition of guanine (a component of nucleic acids), creatine, and arginine, the antibiotic streptomycin, and tetrodotoxin, a poison of animal origin. guanidineenUKguan·i·dine(gwahn'i-dēn, -din),guanidine(gwä′nĭ-dēn′) |
随便看 |
|
英语词典包含2567994条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。