Synonymer & Information om | Engelska ordet PYRAZINE

Exempel på hur man kan använda PYRAZINE i en mening

• Although many piperazine derivatives occur naturally, piperazine itself can be synthesized by reacting alcoholic ammonia with 1,2-dichloroethane, by the action of sodium and ethylene glycol on ethylene diamine hydrochloride, or by reduction of pyrazine with sodium in ethanol.
• Roasted robusta beans produce a strong, full-bodied coffee with a distinctive earthy flavour, but usually with more bitterness than arabica due to its pyrazine content.
• A quinoxaline, also called a benzopyrazine, in organic chemistry, is a heterocyclic compound containing a ring complex made up of a benzene ring and a pyrazine ring.
• It is a dibenzo annulated pyrazine, and the parent substance of many dyestuffs, such as the toluylene red, indulines, and safranines (and the closely related eurhodines).
• The urine of canids, such as wolves, contains sulfur-bearing pyrazine analogues that have been identified as kairomones.
• The two last members of this series, hexazine and pentazine, have not been observed, although all other members of the azine series have (such as pyridine, pyrimidine, pyridazine, pyrazine, triazines, and tetrazines).
• 3-Isobutyl-2-methoxypyrazine (2-isobutyl-3-methoxypyrazine also known as Grindstaff pyrazine) is a methoxypyrazine that is very similar to isopropyl methoxy pyrazine except that the alkyl side-group contains an isobutyl group attached to the carbon alpha to the methoxy sidegroup instead of an isopropyl side-group at that same carbon position.
• Nattō-derived Bacillus isolates include nootropics pyrazine and tetramethylpyrazine, as well as the anticoagulant enzyme nattokinase.
• Usually binucleating ligands feature bridging ligands, such as phenoxide, pyrazolate, or pyrazine, as well as other donor groups that bind to only one of the two metal ions.
• Oxalyl dicyanide can condense with diaminomaleonitrile to make pyrazinetetracarbonitrile and also 5,6-dihydroxypyrazine-2,3-dicarbonitrile, both derivatives of pyrazine.
• A typical reduction reaction is the conversion of tungsten hexachloride to the tetrachloride using the silylated pyrazine reagent:.

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