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1,2-Bis-(3-p-tolyl-1,4-napohthachinon-2-yl)-ethan is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

33440-87-8

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33440-87-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33440-87-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,4,4 and 0 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 33440-87:
(7*3)+(6*3)+(5*4)+(4*4)+(3*0)+(2*8)+(1*7)=98
98 % 10 = 8
So 33440-87-8 is a valid CAS Registry Number.

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