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4,7,13,15-tetraoxa-1,10-diaza-14(1,2),19(1,3)-dibenzena-bicyclo[8.7.3]eicosaphane-11,17-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

69909-20-2

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69909-20-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 69909-20-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,9,0 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 69909-20:
(7*6)+(6*9)+(5*9)+(4*0)+(3*9)+(2*2)+(1*0)=172
172 % 10 = 2
So 69909-20-2 is a valid CAS Registry Number.

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