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2-Hydroxy-1-phenyl-4-p-tolyl-butane-1,4-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

40240-55-9

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40240-55-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40240-55-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,2,4 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 40240-55:
(7*4)+(6*0)+(5*2)+(4*4)+(3*0)+(2*5)+(1*5)=69
69 % 10 = 9
So 40240-55-9 is a valid CAS Registry Number.

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