Pyrazine is a heterocyclic aromatic organic compound with the chemical formula C4H4N2. It is a symmetrical molecule with point group D2h. Pyrazine is less...
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3-Isobutyl-2-methoxypyrazine (redirect from Isobutyl methoxy pyrazine)
also known as Grindstaff pyrazine) is a methoxypyrazine that is very similar to isopropyl methoxy pyrazine except that the alkyl side-group contains...
7 KB (751 words) - 01:46, 19 April 2024
Quinoxaline (redirect from Benzo(a)pyrazine)
heterocyclic compound containing a ring complex made up of a benzene ring and a pyrazine ring. It is isomeric with other naphthyridines including quinazoline, phthalazine...
6 KB (437 words) - 13:44, 21 June 2024
Wine fault (section Ladybird (pyrazine) taint)
This is also a naturally occurring compound in Sauvignon grapes, and so pyrazine taint has been known to make Rieslings taste like Sauvignon blanc.[citation...
29 KB (3,567 words) - 23:43, 9 July 2024
flavour is most widely recognised, caused by pyrazines, which are more prevalent in under-ripened grapes. Pyrazine compounds are present in all Cabernet Sauvignon...
64 KB (8,067 words) - 15:28, 6 September 2024
structural isomers: pyridazine (1,2-diazine) pyrimidine (1,3-diazine) pyrazine (1,4-diazine) 6-membered rings with one nitrogen atom: pyridines 6-membered...
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ethylene glycol on ethylene diamine hydrochloride, or by reduction of pyrazine with sodium in ethanol. A form in which piperazine is commonly available...
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Isopropyl methoxypyrazine (redirect from Isopropyl methoxy pyrazine)
highly odorous metabolites from an actinomycete: 2-Isopropyl-3-methoxy-pyrazine, methylisoborneol, and geosmin. Nancy N. Gerber, Journal of Chemical Ecology...
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Alkylpyrazine (redirect from Alkyl pyrazine)
Alkylpyrazines are chemical compounds based on pyrazine with different substitution patterns. Some alkylpyrazines are naturally occurring highly aromatic...
5 KB (471 words) - 07:19, 3 December 2023
It is isomeric with two other diazine (C4H4N2) rings, pyrimidine and pyrazine. Pyridazines are rare in nature, possibly reflecting the scarcity of naturally...
5 KB (296 words) - 22:20, 19 November 2023
rings Benzene Naphthalene Anthracene Pyridine Quinoline Isoquinoline Pyrazine Quinoxaline Acridine Pyrimidine Quinazoline Pyridazine Cinnoline Phthalazine...
7 KB (452 words) - 16:59, 14 August 2023
with more than 9 rings, consider cephalostatin-1, a steroidic 13-ringed pyrazine with the empirical formula C54H74N2O10 isolated from the Indian Ocean hemichordate...
32 KB (3,641 words) - 18:25, 23 August 2024
nitrogen atoms at positions 1 and 3 in the ring.: 250 The other diazines are pyrazine (nitrogen atoms at the 1 and 4 positions) and pyridazine (nitrogen atoms...
23 KB (2,120 words) - 10:08, 22 June 2024
organic compound with the formula (C6H4)2N2. It is a dibenzo annulated pyrazine, and the parent substance of many dyestuffs, such as the toluylene red...
10 KB (1,068 words) - 11:06, 9 April 2024
Miyazono, Sadaharu; Kashiwayanagi, Makoto (2015). "The scent of wolves: Pyrazine analogs induce avoidance and vigilance behaviors in prey". Frontiers in...
45 KB (5,472 words) - 08:05, 27 August 2024
2,3,5-Trimethylpyrazine (category Pyrazines)
hydroxide and 2,3,5-Trimethyl-5,6-dihydro-pyrazine is 3:1, the mass ratio of ethanol to 2,3,5-trimethyl-5,6-dihydro-pyrazine 10:1,reaction temperature 68 °C, reaction...
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earthy flavour, but usually with more bitterness than arabica due to its pyrazine content. Since arabica beans are believed to have smoother taste with more...
13 KB (1,298 words) - 00:39, 3 August 2024
urinate on their food caches in order to identify them. Their urine contains pyrazine analogs that act as kairomones, repelling their prey. Dog communication...
17 KB (1,868 words) - 20:28, 27 July 2024
chocolate had higher levels of Strecker aldehydes, and lower levels of pyrazines. The dried beans are then transported to a chocolate manufacturing facility...
101 KB (10,458 words) - 17:19, 14 September 2024
depending on the location of the second N, pyridazine, pyrimidine, or pyrazine. Four chemical processes contribute to industrial benzene production: catalytic...
91 KB (9,542 words) - 17:54, 29 August 2024
dipeptide better known as cyclo(prolylglycyl), i.e. (S)-hexahydropyrrolo[1,2-a]pyrazine-1,4-dione. Not to be confused with a cyclopropanyl moiety. "Omberacetam"...
12 KB (936 words) - 08:35, 11 August 2024
cuminaldehyde. Other aroma compounds of toasted cumin are the substituted pyrazines, 2-ethoxy-3-isopropylpyrazine, 2-methoxy-3-sec-butylpyrazine, and...
28 KB (2,982 words) - 12:36, 4 September 2024
nitration of cis-syn-cis-2,6-dioxodecahydro-1H,5H-diimidazo[4,5-b:4',5'-e]pyrazine". The Journal of Organic Chemistry. 56 (10): 3413–3419. doi:10.1021/jo00010a043...
3 KB (138 words) - 01:44, 25 June 2022
The most odorous chemicals in cigar smoke are pyridines. Along with pyrazines, they are also the most odorous chemicals in cigar smokers' breath. These...
75 KB (8,454 words) - 15:20, 9 September 2024
Methoxypyrazine (category Pyrazines)
by insects such as Harmonia axyridis which produces isopropyl methoxy pyrazine (IPMP). They have also been identified as additives in cigarette manufacture...
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complements a small bowl of rice. Nattō odor comes from diacetyl and pyrazines, but if it is allowed to ferment too long, then ammonia is released. The...
22 KB (2,315 words) - 20:58, 31 July 2024
harvested. Many of the phenolic compounds and aroma compounds, such as pyrazine, that contribute to strong grassy flavours are found in the grape skins...
18 KB (2,233 words) - 19:32, 23 August 2024
silicon. A typical formulation consists of ethylenediamine, pyrocatechol, pyrazine and water. It is carcinogenic and very corrosive. It is mainly used in...
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axyridis, like other ladybeetles or ladybirds, uses isopropyl methoxy pyrazine as a defensive chemical to deter predation, and also carries this chemical...
22 KB (2,435 words) - 16:07, 12 July 2024
mashing process, particularly through formation of 2-furanmethanol and pyrazines imparting nutty or cereal characteristics contributes to the baked bread...
66 KB (7,148 words) - 07:57, 16 August 2024