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2,5-二甲基吡嗪

2,5-二甲基吡嗪结构式
2,5-二甲基吡嗪结构式
品牌特惠专场
常用名 2,5-二甲基吡嗪 英文名 2,5-Dimethylpyrazine
CAS号 123-32-0 分子量 108.141
密度 1.0±0.1 g/cm3 沸点 155.0±0.0 °C at 760 mmHg
分子式 C6H8N2 熔点 15°C
MSDS 中文版 美版 闪点 63.9±0.0 °C
符号 GHS07
GHS07
信号词 Warning

Aminoacetone oxidase from Streptococcus oligofermentans belongs to a new three-domain family of bacterial flavoproteins.

Biochem. J. 464(3) , 387-99, (2014)

The aaoSo gene from Streptococcus oligofermentans encodes a 43 kDa flavoprotein, aminoacetone oxidase (SoAAO), which was reported to possess a low catalytic activity against several different L-amino acids; accordingly, it was classified as an L-amino acid ox...

Olfactometry Profiles and Quantitation of Volatile Sulfur Compounds of Swiss Tilsit Cheeses.

J. Agric. Food Chem. 63 , 7511-21, (2015)

To establish the odor profiles of three differently fabricated commercial Swiss Tilsit cheeses, analyses were conducted using headspace solid-phase microextraction gas chromatography-mass spectrometry/pulsed flame photometric detection and gas chromatography-...

Influence of Free Amino Acids, Oligopeptides, and Polypeptides on the Formation of Pyrazines in Maillard Model Systems.

J. Agric. Food Chem. 63 , 5364-72, (2015)

Pyrazines are specific Maillard reaction compounds known to contribute to the unique aroma of many products. Most studies concerning the generation of pyrazines in the Maillard reaction have focused on amino acids, while little information is available on the...

Aroma improvement by repeated freeze-thaw treatment during Tuber melanosporum fermentation.

Sci. Rep. 5 , 17120, (2015)

The aroma attributes of sulfurous, mushroom and earthy are the most important characteristics of the aroma of Tuber melanosporum. However, these three aroma attributes are absent in the T. melanosporum fermentation system. To improve the quality of the aroma,...

Extension of a dynamic headspace multi-volatile method to milliliter injection volumes with full sample evaporation: Application to green tea.

J. Chromatogr. A. 1421 , 103-13, (2015)

An extension of multi-volatile method (MVM) technology using the combination of a standard dynamic headspace (DHS) configuration, and a modified DHS configuration incorporating an additional vacuum module, was developed for milliliter injection volume of aque...

Coffee aroma—Statistical analysis of compositional data

Talanta 80(2) , 710-5, (2009)

Solid-phase microextraction in headspace mode coupled with gas chromatography–mass spectrometry was applied to the determination of volatile compounds in 30 commercially available coffee samples. In order to differentiate and characterize Arabica and Robusta ...

Ru(II) multinuclear metallosupramolecular rack-type architectures of polytopic hydrazone-based ligands: synthesis, structural features, absorption spectra, redox behavior, and near-infrared luminescence.

Chemistry 16(19) , 5645-60, (2010)

A novel class of polytopic hydrazone-based ligands was synthesized. They gave heteroleptic Ru(II) polynuclear rack-like complexes of formula [Ru(n)terpy(n)(bridging molecular strand)](2n+) (terpy=2,2':6',2''-terpyridine). The new rack-like systems can be view...

[The role of metabolic activation of promutagens in the genome destabilization under pheromonal stress in the house mouse (Mus musculus)].

Genetika 47(10) , 1357-63, (2011)

The hypothesis on a relationship between the high frequency of mitotic disturbances in bone marrow cells and the change in the activity of the S9 liver fraction containing promutagen-activating enzymes under olfactory stress in the house mouse Mus musculus ha...

[Chemical profiles of methylpyrazines contained in commercially available natto].

Yakugaku Zasshi 124(1) , 31-6, (2004)

Structures and amounts of methylpyrazines contained in commercial natto, a fermented soybean food in Japan, were determined using HPLC equipped with an acid-resistant reversed phase column, Capcell Pak C18 ACR (Shiseido). Mobile phase solvent mixtures consist...

Grueneberg ganglion neurons are activated by a defined set of odorants.

Chem. Senses 36(3) , 271-82, (2011)

Based on a variety of recent findings, the Grueneberg ganglion (GG) in the vestibule of the nasal cavity is considered as an olfactory compartment. However, defined chemical substances that activate GG neurons have not been identified. In this study, the resp...