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2-Chlor-5-p-nitrophenylazo-tropolon is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

19394-50-4

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19394-50-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19394-50-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,3,9 and 4 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 19394-50:
(7*1)+(6*9)+(5*3)+(4*9)+(3*4)+(2*5)+(1*0)=134
134 % 10 = 4
So 19394-50-4 is a valid CAS Registry Number.

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