What is the Pyrazine?

Pyrazine is white crystals or powder, while it's Molecular Formula is C4H4N2. white crystals or powder Pyrazine is used as a flavoring agent. It serves as a component of some herbs in traditional Chinese medicine. It is employed as pharmaceutical intermediates, perfume intermediates and involved in the preparation of other chemicals. In addition to this, it is used in the production of pyrazine 1-oxide.

What is the CAS number for Pyrazine?

The CAS number of Pyrazine is 290-37-9.

What is Pyrazine (290-37-9) used for?

Pyrazine is a heterocyclic aromatic organic compound and can be reacted to obtain diverse pyrazine derivatives. Pyrazines are important contributors to the flavor of various roasted, toasted, or similarly heated foods. Pyrazine derivatives exhibit a wide variety of aromas in food, e.g. 2-methoxy-3-isopropylpyrazine produces a green pea odor. Pyrazines and pyrazine derivatives are typically used as flavor agent. Pyrazines and Pyrazine derivatives are also used as fragrances.InChI:InChI=1/C4H4N2/c1-2-6-4-3-5-1/h1-4H

What is the Pyrazine?

Pyrazine is white crystals or powder, while it's Molecular Formula is C4H4N2. white crystals or powder Pyrazine is used as a flavoring agent. It serves as a component of some herbs in traditional Chinese medicine. It is employed as pharmaceutical intermediates, perfume intermediates and involved in the preparation of other chemicals. In addition to this, it is used in the production of pyrazine 1-oxide.

What is the CAS number for Pyrazine?

The CAS number of Pyrazine is 290-37-9.

What is Pyrazine (290-37-9) used for?

Pyrazine is a heterocyclic aromatic organic compound and can be reacted to obtain diverse pyrazine derivatives. Pyrazines are important contributors to the flavor of various roasted, toasted, or similarly heated foods. Pyrazine derivatives exhibit a wide variety of aromas in food, e.g. 2-methoxy-3-isopropylpyrazine produces a green pea odor. Pyrazines and pyrazine derivatives are typically used as flavor agent. Pyrazines and Pyrazine derivatives are also used as fragrances.InChI:InChI=1/C4H4N2/c1-2-6-4-3-5-1/h1-4H

Detailed introduction

Reliable Quality pyrazine 290-37-9 Hot Sale with Chinese Manufacturer

Molecular Formula:C4H4N2
Molecular Weight:80.0892
Appearance/Colour:white crystals or powder
Vapor Pressure:19.7mmHg at 25°C
Melting Point:50-56 ºC(lit.)
Refractive Index:1.5235
Boiling Point:118.634 ºC at 760 mmHg
PKA:0.65(at 27℃)
Flash Point:55.556 ºC
PSA：25.78000
Density:1.055 g/cm³
LogP:0.47660

Pyrazine(Cas 290-37-9) Usage

Preparation	Prepared by cyclization of α-amino ketones, which were produced by the reduction of isonitroso ketones to yield the dihydropyrazines, which are dehydrogenated with mercury(I) oxide or copper(II) sulfate or sometimes with atmospheric oxygen.
Purification Methods	Distil pyrazine in steam and crystallise it from water. Purify also by zone melting. [Beilstein 23 H 91, 23 II 80, 23 III/IV 899, 23/5 V 351.]
General Description	Pyrazine, also known as 1,4-diazine or p-diazine, is a heterocyclic aromatic compound characterized by a six-membered ring containing two nitrogen atoms at opposite positions. It is a key structural motif in various biologically active molecules and flavor compounds, often contributing to nutty, roasted, or earthy aromas in foods and beverages. Pyrazine derivatives are widely studied for their applications in pharmaceuticals, agrochemicals, and materials science due to their versatile chemical properties and ability to participate in diverse synthetic pathways. Pyrazine's stability and electron-rich nature make it a valuable scaffold in medicinal chemistry and functional materials.
Definition	ChEBI: A diazine that is benzene in which the carbon atoms at positions 1 and 4 have been replaced by nitrogen atoms.
Aroma threshold values	300 ppm (odor threshold in water)