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1-(o-chlorophenyl)-2-bromo-2-chloro-1-propanone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

81671-56-9

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81671-56-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81671-56-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,7 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 81671-56:
(7*8)+(6*1)+(5*6)+(4*7)+(3*1)+(2*5)+(1*6)=139
139 % 10 = 9
So 81671-56-9 is a valid CAS Registry Number.

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