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2-oxo-but-3-ene-1,1,4t-tricarboxylic acid triethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

54397-57-8

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54397-57-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54397-57-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,3,9 and 7 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 54397-57:
(7*5)+(6*4)+(5*3)+(4*9)+(3*7)+(2*5)+(1*7)=148
148 % 10 = 8
So 54397-57-8 is a valid CAS Registry Number.

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