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Acetic acid (1S,2R,3R,4S,5R)-2,3,5-triacetoxy-1-acetoxymethyl-4-bromo-cyclohexyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

109917-42-2

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109917-42-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109917-42-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,9,1 and 7 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 109917-42:
(8*1)+(7*0)+(6*9)+(5*9)+(4*1)+(3*7)+(2*4)+(1*2)=142
142 % 10 = 2
So 109917-42-2 is a valid CAS Registry Number.

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