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4-(O2,O3-isopropylidene-O5-trityl-β-D-ribofuranosyl)-1H-pyrazole-3,5-dicarboxylic acid ethyl ester methyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

57017-03-5

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57017-03-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57017-03-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,0,1 and 7 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 57017-03:
(7*5)+(6*7)+(5*0)+(4*1)+(3*7)+(2*0)+(1*3)=105
105 % 10 = 5
So 57017-03-5 is a valid CAS Registry Number.

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