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1-(2,4-dibromo-phenyl)-3,5-diphenyl-6,9-dioxa-1,2,4-triaza-5λ5-phospha-spiro[4.4]non-2-ene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

71559-16-5

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71559-16-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71559-16-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,5,5 and 9 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 71559-16:
(7*7)+(6*1)+(5*5)+(4*5)+(3*9)+(2*1)+(1*6)=135
135 % 10 = 5
So 71559-16-5 is a valid CAS Registry Number.

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