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2-((1S,5R)-3-Benzyl-7-oxo-4-oxa-2,6-diaza-bicyclo[3.2.0]hept-2-en-6-yl)-3-methyl-but-2-enoic acid benzyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

57518-28-2

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57518-28-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57518-28-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,5,1 and 8 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 57518-28:
(7*5)+(6*7)+(5*5)+(4*1)+(3*8)+(2*2)+(1*8)=142
142 % 10 = 2
So 57518-28-2 is a valid CAS Registry Number.

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