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181589-32-2

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181589-32-2 Usage

Chemical Properties

Light Yellow Oil

Uses

An earthy smelling compound detected in Coffee.

Check Digit Verification of cas no

The CAS Registry Mumber 181589-32-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,5,8 and 9 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 181589-32:
(8*1)+(7*8)+(6*1)+(5*5)+(4*8)+(3*9)+(2*3)+(1*2)=162
162 % 10 = 2
So 181589-32-2 is a valid CAS Registry Number.

181589-32-2SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 14, 2017

Revision Date: Aug 14, 2017

1.Identification

1.1 GHS Product identifier

Product name 2-ethenyl-3-ethyl-5-methylpyrazine

1.2 Other means of identification

Product number -
Other names 3-Ethyl-5-methyl-2-ethenylpyrazine

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:181589-32-2 SDS

181589-32-2Downstream Products

181589-32-2Relevant articles and documents

Detection of Odor-Active Ethenylalkylpyrazines in Roasted Coffee

Czerny, Michael,Wagner, Robert,Grosch, Werner

, p. 3268 - 3272 (2007/10/03)

In roasted Robusta coffee, two potent earthy smelling compounds were identified as 2-ethenyl-3,5-dimethylpyrazine and 2-ethenyl-3-ethyl-5-methylpyrazine by comparison of gas chromatography and mass spectrometry data with those of the corresponding reference substances. The odor threshold values (0.014 ng/L, air) of the new pyrazines were as low as those of 2-ethyl-3,5-dimethyl-and 2,3-diethyl-5-methylpyrazine. 3-Ethenyl-2-ethyl-5-methylpyrazine was also detected in coffee, and its odor threshold value was 8000 times higher than that of the 2-ethenyl-3-ethyl-5-methylpyrazine. After addition of HBr, the two ethenylethylmethylpyrazine isomers were separated by capillary gas chromatography. The results indicate the presence of the two isomers in a 1:1 ratio in coffee.

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