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1091585-31-7

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1091585-31-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1091585-31-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,9,1,5,8 and 5 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1091585-31:
(9*1)+(8*0)+(7*9)+(6*1)+(5*5)+(4*8)+(3*5)+(2*3)+(1*1)=157
157 % 10 = 7
So 1091585-31-7 is a valid CAS Registry Number.

1091585-31-7Upstream product

1091585-31-7Relevant articles and documents

A PROCESS FOR STEREOSELECTIVE SYNTHESIS OF LAMIVUDINE

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Page/Page column 13, (2010/04/24)

The present invention discloses a process for stereoselective synthesis of Lamivudine comprising the following steps: (a) performing a glycosylation reaction between the compound of formula (I) and cytosine or protected cytosine, and separating the reaction product by recrystallization to obtain the intermediate of formula (II); and (b) deprotecting the intermediate of formula (II) to obtain Lamivudine.

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