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Acetic acid 4-(3-methyl-2-oxo-2H-pyrazin-1-yl)-butyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

208931-55-9

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208931-55-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 208931-55-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,8,9,3 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 208931-55:
(8*2)+(7*0)+(6*8)+(5*9)+(4*3)+(3*1)+(2*5)+(1*5)=139
139 % 10 = 9
So 208931-55-9 is a valid CAS Registry Number.

208931-55-9Upstream product

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