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5-benzo[1,3]dioxol-5-yl-naphtho[2,3-d][1,3]dioxole-6,7-dicarboxylic acid 7-ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

289622-31-7

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289622-31-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 289622-31-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,9,6,2 and 2 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 289622-31:
(8*2)+(7*8)+(6*9)+(5*6)+(4*2)+(3*2)+(2*3)+(1*1)=177
177 % 10 = 7
So 289622-31-7 is a valid CAS Registry Number.

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