Pyrazine
... then condensed and then oxidized to a pyrazine. A variation is the Gutknecht pyrazine synthesis (1879) also based on this ... Pyrazine is less basic than pyridine, pyridazine and pyrimidine. It is a "deliquescent crystal or wax-like solid with a pungent ... Pyrazine is a heterocyclic aromatic organic compound with the chemical formula C4H4N2. It is a symmetrical molecule with point ... Many methods exist for the organic synthesis of pyrazine and its derivatives. Some of these are among the oldest synthesis ...
Alkylpyrazine
Effect of mass and turning time on free amino acid, peptide-N, sugar and pyrazine concentration during cocoa fermentation. P ... Zhao, Chao; Cao, Hui; Xiao, Jianbo (2020). "Pyrazines in Food". Handbook of Dietary Phytochemicals. Springer: 1-25. doi:10.1007 ... Alkylpyrazines are chemical compounds based on pyrazine with different substitution patterns. Some alkylpyrazines are naturally ... "Structure-odor relationships for disubstituted pyrazines". Journal of Agricultural and Food Chemistry. 36 (6): 1242-7. doi: ...
QMC@Home
12a Pyrazine; 12 Pyrazine dimer; 13 Uracil dimer; 14a Indole; 14 Indole/benzene; 15 Adenine/thymine stack; 16b Ethyne; 16 ...
2,3,4-Pentanetrione
Chesseman, G. W. H.; Cookson, R. F. (2009). The Chemistry of Heterocyclic Compounds, Condensed Pyrazines. John Wiley & Sons. p ...
Whisky
The nitrogen compounds include pyridines, picolines and pyrazines. The sulfur compounds include thiophenes and polysulfides ...
Daceton armigerum
During prey capture, the workers can sting the prey; their poison gland contains a mixture of pyrazines. Through group-hunting ...
Construction of electronic cigarettes
Flavorings may contain menthol, sugars, esters, and pyrazines. Flavor components include eucalyptol, camphor, methyl salicylate ...
Minisci reaction
"Homolytic acylation of protonated pyridines and pyrazines with .alpha.-keto acids: The problem of monoacylation". The Journal ...
Leopold Rügheimer
This procedure is now known as the Staedel-Rugheimer pyrazine synthesis. First synthesis of tropic acid in 1880, together with ... First synthesis of piperine (1882). Staedel-Rugheimer pyrazine synthesis W Pötsch. Lexikon bedeutender Chemiker (VEB ... was a notable German chemist whose name is connected to the Staedel-Rugheimer pyrazine synthesis, a reaction that was ... Published an article together with Wilhelm Staedel concerning the synthesis of pyrazines by reacting α-haloketones with ammonia ...
Ampyzine
It is a derivative of pyrazine. Lednicer D, Mitscher LA (1980-05-13). The Organic Chemistry of Drug Synthesis. ISBN ...
Red imported fire ant
Workers can detect pyrazines which are produced by the alates; these pyrazines may be involved in nuptial flight, as well as an ... Vander Meer, R.K.; Preston, C.A.; Choi, M.-Y. (2010). "Isolation of a pyrazine alarm pheromone component from the fire ant, ...
Cannabinoid receptor antagonist
Other six-membered ring analogs are for example pyrimidines and pyrazines. In addition to the five and six-membered ring ...
Acetylpyrazine
Chemically, acetylpyrazine is a pyrazine and a ketone. Acetylpyrazine is found in foods such as seeds, nuts and meats. It is ...
Arctiinae
Common defenses include cardiac glycosides (or cardenolides), pyrrolizidine alkaloids, pyrazines, and histamines. Larvae ...
Salt-free reduction
Related pyrazine- and cyclohexadiene-based reagents have been developed. They are red or orange THF-soluble solids. The ... LiCl A typical reduction reaction is the conversion of tungsten hexachloride to the tetrachloride using the silylated pyrazine ...
N-Phenylacetyl-L-prolylglycine ethyl ester
... pyrazine-1,4-dione. Not to be confused with a cyclopropanyl moiety. NCBI Inxight (ncats) 4QBJ98683M "Noopept Information". ...
Benzamil
Like amiloride, it is a guanidinium group-containing pyrazine derivative. Benzamil is closely related to amiloride. By adding ...
Ethylenediamine pyrocatechol
A typical formulation consists of ethylenediamine, pyrocatechol, pyrazine and water. It is carcinogenic and very corrosive. It ...
CCPForge
"Elastic and inelastic low-energy electron collisions with pyrazine" (PDF). The Journal of Chemical Physics. 135 (14): 144308. ...
Piperazine
... or by reduction of pyrazine with sodium in ethanol. A form in which piperazine is commonly available industrially is as the ... Amine gas treating Methyl diethanolamine Piperidine Pyrazine Pyridine "Front Matter". Nomenclature of Organic Chemistry : IUPAC ...
Pyridine
Buttery, Ron G.; Seifert, Richard M.; Guadagni, Dante G.; Ling, Louisa C. (1971). "Characterization of Volatile Pyrazine and ... and pyrazine. Impure pyridine was undoubtedly prepared by early alchemists by heating animal bones and other organic matter, ...
Cigar
Along with pyrazines, they are also the most odorous chemicals in cigar smokers' breath. These substances are noticeable even ...
Silver molybdate
Overcoming High Pressures by 2,3-Bis(2-pyridyl)pyrazine Doping". Crystal Growth & Design. 15 (6): 3032-3037. doi:10.1021/acs. ... pyrazine (dpp) as a doping agent. The influence of the pH of the starting solution on the growth and formation processes of ...
Coordination polymer
They range from polyfunctional heterocycles, such as pyrazine, to simple halides. Almost any type of atom with a lone pair of ...
Georgiy B. Shul'pin
Catalytic combinations: i) "vanadium derivative plus pyrazine-2-carboxylic acid (PCA)"; ii) "a dinuclear manganese(IV) complex ...
Coccinellidae
Coccinellid haemolymph (blood) contains toxic alkaloids, azamacrolides and polyamines, as well as foul-smelling pyrazines. ...
Retro-Diels-Alder reaction
5) Nitriles may be released in rDA reactions of DA adducts of pyrimidines or pyrazines. The resulting highly substituted ...
GML-1
Yarkova MA, Mokrov GV, Gudasheva TA, Seredenin SB (Nov 2016). "Novel Pyrrolo[1,2-a]Pyrazines (TSPO Ligands) with Anxiolytic ... pyrazine-3-carboxamides, and its anxiolytic effects were examined using the open field test (OFT) and the elevated plus maze ( ... pyrazine-3-carboxamides". Bioorganic & Medicinal Chemistry. 23 (13): 3368-78. doi:10.1016/j.bmc.2015.04.049. PMID 25937237. ...
3-Isobutyl-2-methoxypyrazine
This is to such an extent that Grindstaff pyrazine is sometimes just called the "bell pepper pyrazine." The human nose can ... Unlike capsaicin, which is produced and mainly stored in the placenta of the pepper, Grindstaff pyrazine is mainly contained in ... 3-Isobutyl-2-methoxypyrazine (2-isobutyl-3-methoxypyrazine also known as Grindstaff pyrazine) is a methoxypyrazine that is very ... 2002). "The FEMA GRAS assessment of pyrazine derivatives used as flavor ingredients". Food and Chemical Toxicology. 40 (4): 429 ...
MK-212
... (CPP or 6-chloro-2-(1-piperazinyl)pyrazine) is a serotonin agonist. It promotes the secretion of serum prolactin and ... pyrazine (CPP; MK-212)". European Journal of Pharmacology. 44 (1): 65-74. doi:10.1016/0014-2999(77)90117-0. PMID 885160. Porter ...