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(1'E,3'E)-15,3',4',15'-tetradehydro-β,ψ-caroten-16'-oic acid methyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

103442-69-9

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103442-69-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 103442-69-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,4,4 and 2 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 103442-69:
(8*1)+(7*0)+(6*3)+(5*4)+(4*4)+(3*2)+(2*6)+(1*9)=89
89 % 10 = 9
So 103442-69-9 is a valid CAS Registry Number.

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