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(2E,4E,6E,8E)-9-[2-(1-Ethoxy-ethoxymethyl)-6,6-dimethyl-cyclohex-1-enyl]-3,7-dimethyl-nona-2,4,6,8-tetraenoic acid is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

81121-51-9

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81121-51-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81121-51-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,1,2 and 1 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81121-51:
(7*8)+(6*1)+(5*1)+(4*2)+(3*1)+(2*5)+(1*1)=89
89 % 10 = 9
So 81121-51-9 is a valid CAS Registry Number.

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