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4-Methoxy-7-methyl-bicyclo[4.2.0]octa-1(6),2,4-triene-7-carboxylic acid (E)-4-benzyloxy-but-2-enyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

97998-91-9

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97998-91-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97998-91-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,9,9 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 97998-91:
(7*9)+(6*7)+(5*9)+(4*9)+(3*8)+(2*9)+(1*1)=229
229 % 10 = 9
So 97998-91-9 is a valid CAS Registry Number.

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