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2,7-dioxo-3-p-tolyl-2,7-dihydro-3H-naphtho[1,2,3-de]quinoline-4-carboxylic acid is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

872293-91-9

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872293-91-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 872293-91-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,2,2,9 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 872293-91:
(8*8)+(7*7)+(6*2)+(5*2)+(4*9)+(3*3)+(2*9)+(1*1)=199
199 % 10 = 9
So 872293-91-9 is a valid CAS Registry Number.

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