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1-(4-nitro-phenyl)-butane-1,2,3-trione-2-(4-nitro-phenylhydrazone) is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

73981-65-4

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73981-65-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 73981-65-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,9,8 and 1 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 73981-65:
(7*7)+(6*3)+(5*9)+(4*8)+(3*1)+(2*6)+(1*5)=164
164 % 10 = 4
So 73981-65-4 is a valid CAS Registry Number.

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