osazone

osazone
The compound formed by certain sugars ( e.g., glucose, galactose, fructose) with excess hydrazines, possessing two hydrazones on carbons 1 and 2 instead of only one at C-1, as in the ordinary hydrazone, thus, RNH—N=CR′—CR″=N—NHR″′; osazones formed with phenylhydrazine (phenylosazones) are used to characterize and identify certain sugars. SYN: dihydrazone.

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osa·zone 'ō-sə-.zōn, 'äs-ə- n any of a class of basic compounds that contain two adjacent hydrazone groups

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osa·zone (oґsə-zōn) any of a series of compounds obtained by heating a sugar with phenylhydrazine and an acid; the resulting crystals are characteristic of specific sugars and have been used to identify them. See also individual compounds; e.g., glucosazone.

Medical dictionary. 2011.

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  • Osazone —   [Kurzwort], organische Verbindungen, die durch Reaktion von Monosacchariden (Hexosen, Pentosen; allgemein von Verbindungen, die in 1,2 Stellung eine Carbonyl und eine Hydroxylgruppe enthalten) mit überschüssigem Phenylhydrazin entstehen;… …   Universal-Lexikon

  • Osazone — Osazone, s. Phenylhydrazin …   Meyers Großes Konversations-Lexikon

  • osazone — ● osazone nom féminin Nom générique des bisphénylhydrazones obtenues par action de la phénylhydrazine sur les oses …   Encyclopédie Universelle

  • Osazone — Ball and stick model of glucose osazone Osazones are a class of carbohydrate derivatives found in organic chemistry formed when sugars are reacted with phenylhydrazine [1]. The famous German …   Wikipedia

  • Osazone — Als Osazone bezeichnet man die Phenylhydrazone von Zuckern. Inhaltsverzeichnis 1 Geschichte 2 Darstellung 3 Eigenschaften 4 Chemische Bedeutung …   Deutsch Wikipedia

  • osazone — noun any glycoside of an aldose or 2 ketose formed by reaction with excess of an aryl hydrazine …   Wiktionary

  • Osazone — Osa|zo|ne die (Plur.) Kunstw.> organische Verbindungen, die durch Reaktion von ↑Monosacchariden mit überschüssigem ↑Phenylhydrazin entstehen u. zur Isolierung u. Identifizierung von Zuckern verwendet werden (Chem.) …   Das große Fremdwörterbuch

  • osazone — osa·zone …   English syllables

  • osazone — ˈōsəˌzōn, ˈäs noun ( s) Etymology: International Scientific Vocabulary ose (II) + az + one; probably originally formed as German osazon : any of a class of basic compounds that contain two adjacent hydrazone groupings and are made from an alpha… …   Useful english dictionary

  • Озазоны — (Osazone) см. Глюкозы …   Энциклопедический словарь Ф.А. Брокгауза и И.А. Ефрона

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