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21261-08-5

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21261-08-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21261-08-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,2,6 and 1 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 21261-08:
(7*2)+(6*1)+(5*2)+(4*6)+(3*1)+(2*0)+(1*8)=65
65 % 10 = 5
So 21261-08-5 is a valid CAS Registry Number.

21261-08-5Relevant articles and documents

PROCESS FOR PREPARATION OF CIS-NUCLEOSIDE DERIVATIVE

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Page/Page column 8, (2011/11/30)

The present invention relates to a novel and stereoselective synthetic process for the preparation of optically active cis-nucleoside derivatives of compound of Formula (I), wherein R3 represents H, F, Cl, C1-16 alkyl.

PROCESS FOR THE PREPARATION OF CIS-NUCLEOSIDE DERIVATIVE

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Page/Page column 18-19, (2010/08/08)

The present invention relates to a novel and stereoselective synthetic process for the preparation of optically active cis-nucleoside derivatives of compound of Formula (I), wherein R3 represents H, F, Cl, C1-16 alkyl.

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