2882-20-4 Usage
Description
2-Methyl-3-(methylthio)pyrazine is a clear colorless liquid with a unique aroma profile. It possesses a nutty, roasted, and earthy scent with coffee and corn nuances, as well as a roasted almond, hazelnut, and vegetable aroma. Its taste threshold values range from 3 to 10 ppm, and it can be detected at aroma threshold values of 4 to 60 ppb.
Uses
Used in Flavor and Fragrance Industry:
2-Methyl-3-(methylthio)pyrazine is used as a flavoring agent for its nutty, roasted, and earthy taste characteristics, as well as its aroma profile that includes toasted popcorn, roasted almond, hazelnut, peanut, and cashew notes, along with a caramellic and corn-chip nuance.
Used in Food and Beverage Industry:
2-Methyl-3-(methylthio)pyrazine is used as a flavor enhancer in various food and beverage products to impart a rich, nutty, and roasted flavor, as well as to add depth and complexity to the overall taste experience.
Preparation
From 2-methylchloropyrazine; a mixture of 2-methyl-3-methylthiopyrazine, 2-methyl-5-methylthiopyrazine, and
2-methyl-6-methylthiopyrazine is obtained.
Check Digit Verification of cas no
The CAS Registry Mumber 2882-20-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,8,8 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 2882-20:
(6*2)+(5*8)+(4*8)+(3*2)+(2*2)+(1*0)=94
94 % 10 = 4
So 2882-20-4 is a valid CAS Registry Number.
InChI:InChI=1/C6H8N2S/c1-5-6(9-2)8-4-3-7-5/h3-4H,1-2H3
2882-20-4Relevant articles and documents
Production method of 2-methyl-3(5 or 6)-methylthio pyrazine
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Paragraph 0027-0034, (2020/04/17)
The invention discloses a production method of 2-methyl-3(5 or 6)-methylthio pyrazine. The method comprises the following steps: adding solvents dichloroethane and triethylamine into a reaction kettle, sealing the reaction kettle, introducing chlorine to control the pressure in the kettle at 0.02-0.03 MPa, pumping a methylpyrazine solution into the reaction kettle by using a metering pump, controlling the temperature at 45-60 DEG C, reacting, and transferring reaction liquid(containing the chlorine)in the kettle into a dichloroethane turnover tank through filter pressing for recycling after the reaction is finished; dissolving the residual 2-methyl-3(5 or 6)-chloropyrazine hydrochloride solid in the reaction kettle with water, adjusting the neutrality, and layering to obtain a 2-methyl-3(5or 6)-chloropyrazine crude product; and dropwise adding thechloropyrazine crude product is into sodium methyl mercaptide, performing reflux reaction , and after reaction liquid is extracted, adding an aid into an organic phase to generate a hydrochloride for separating the non-pyrazine product from the product to greatly improve the aroma quality of the obtained product. The product grade is improved, and the whole production process is safe and environmentally friendly.
