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(8Z,11Z,14Z)-Icosa-8,11,14-trien-5-ynoic acid methyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

77297-91-7

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77297-91-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77297-91-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,2,9 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 77297-91:
(7*7)+(6*7)+(5*2)+(4*9)+(3*7)+(2*9)+(1*1)=177
177 % 10 = 7
So 77297-91-7 is a valid CAS Registry Number.

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