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(E)-4-Bromo-3-(4-chloro-phenyl)-but-2-enoic acid is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

81244-20-4

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81244-20-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81244-20-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,2,4 and 4 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81244-20:
(7*8)+(6*1)+(5*2)+(4*4)+(3*4)+(2*2)+(1*0)=104
104 % 10 = 4
So 81244-20-4 is a valid CAS Registry Number.

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