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5,20-diphenyl-5,12,13,20,25,27,28,30-octahydro-10H,15H-11,14,26,29-tetraoxa-5,20-diphospha-tetrabenzo[a,d,l,o]cyclodocosene 5,20-dioxide is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

69928-20-7

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69928-20-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 69928-20-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,9,2 and 8 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 69928-20:
(7*6)+(6*9)+(5*9)+(4*2)+(3*8)+(2*2)+(1*0)=177
177 % 10 = 7
So 69928-20-7 is a valid CAS Registry Number.

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