The Collaborative International Dictionary of English. 2000.
Pyrazine — IUPAC name Pyrazine … Wikipedia
Pyrazine — Pyrazine[1] Structure de la pyrazine Général … Wikipédia en Français
Pyrazine — (Piazine, Aldine, Ketine) entstehen aus Amidoaldehyden und Amidoketonen durch Kondensation zweier Moleküle unter Austritt von Wasser und Wasserstoff. Dimethyl und Trimethylpyrazin sind aus Fuselöl isoliert worden, sie entstehen auch durch… … Meyers Großes Konversations-Lexikon
pyrazine — ● pyrazine nom féminin Composé C4H4N2, dont le squelette se retrouve dans de nombreux produits naturels. Nom générique des dérivés de ce composé … Encyclopédie Universelle
pyrazine — ▪ chemical compound any of a class of organic compounds of the heterocyclic series characterized by a ring structure containing four atoms of carbon and two of nitrogen. The pyrazine ring is part of many polycyclic compounds of biological… … Universalium
pyrazine — pyr·azine pir ə .zēn n 1) a crystalline heterocyclic weakly basic compound C4H4N2 2) any of various derivatives of pyrazine * * * py·ra·zine (pĭґrə zēn) an aromatic compound comprising a six membered ring with nitrogen atoms at… … Medical dictionary
pyrazine — pirazinas statusas T sritis chemija apibrėžtis Šešianaris heterociklinis junginys. formulė C₄H₄N₂ atitikmenys: angl. pyrazine rus. пиразин ryšiai: sinonimas – 1,4 diazinas … Chemijos terminų aiškinamasis žodynas
pyrazine — noun A diazine in which the two nitrogen atoms are in the para positions; many of its derivatives are pharmaceuticals … Wiktionary
pyrazine — pyr·azine … English syllables
pyrazine — ˈpirəˌzēn, zə̇n noun Etymology: International Scientific Vocabulary pyr + azine : a crystalline feeble heterocyclic base C4H4N2 obtained usually by distilling piperazine with zinc dust called also paradiazine … Useful english dictionary
