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876189-90-1

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876189-90-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 876189-90-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,6,1,8 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 876189-90:
(8*8)+(7*7)+(6*6)+(5*1)+(4*8)+(3*9)+(2*9)+(1*0)=231
231 % 10 = 1
So 876189-90-1 is a valid CAS Registry Number.

876189-90-1Relevant articles and documents

Rapid synthesis of kahweofuran and its derivatives, the coffee aroma components

Li, Yanwu,Murakami, Yusuke,Katsumura, Shigeo

, p. 787 - 789 (2007/10/03)

Kahweofuran, as an impact flavor component of roasted coffee and possesses the 6-methyl-2,3-dihydrothieno[2,3-c]furan structure, was rapidly synthesized from 2-acetyl-3-hydroxymethylthiophene by the formal reductive cyclization using the Wilkinson's catalyst. Similarly, the syntheses of the 4-methyl, 6-ethyl and 4,6-dimethyl derivatives were also achieved in favorable yields.

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