英语词汇“guanidine”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

　

单词	guanidine
释义	guanidine enUK gua·ni·dine G0295600 (gwä′nĭ-dēn′)n. A strongly alkaline crystalline compound, NHC(NH₂)₂, formed by the oxidation of guanine and found in the urine as a normal product of protein metabolism. It is commonly used in the organic synthesis of plastics, resins, and explosives. [guan(ine) + -id(e) + -ine.] guanidine (ˈɡwɑːnɪˌdiːn; -dɪn; ˈɡwænɪ-) or guanidin n (Biochemistry) a strongly alkaline crystalline substance, soluble in water and found in plant and animal tissues. It is used in organic synthesis. Formula: HNC(NH2)2. Also called: carbamidine or iminourea [C19: from guano + -id³ + -ine²] guan•i•dine (ˈgwæn ɪˌdin, -dɪn, ˈgwɑ nɪ-) n. a crystalline, alkaline, water-soluble solid, CH₅N₃, used in making plastics, resins, and explosives. [1860–65; guan (o) + -idine] Guanidine enUK guanidine [′gwän·ə‚dēn] (biochemistry) CH₅N₂ Aminomethanamidine, a product of protein metabolism found in urine. 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. guanidine enUK guan·i·dine (gwahn'i-dēn, -din), A strongly basic compound, usually found (in some plants and lower animals) as the hydrochloride; a constituent of creatine and arginine. guanidine (gwä′nĭ-dēn′)n. A strongly alkaline crystalline compound, NHC(NH₂)₂, formed by the oxidation of guanine and found in the urine as a normal product of protein metabolism. It is commonly used in the organic synthesis of plastics, resins, and explosives.
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