139253-83-1 Usage
Uses
(S)-(5-Methoxy-1,3-Oxathiolan-2-yl)methyl Benzoate is an intermediate used in the synthesis of antiviral nucleosides.
Check Digit Verification of cas no
The CAS Registry Mumber 139253-83-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,2,5 and 3 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 139253-83:
(8*1)+(7*3)+(6*9)+(5*2)+(4*5)+(3*3)+(2*8)+(1*3)=141
141 % 10 = 1
So 139253-83-1 is a valid CAS Registry Number.
139253-83-1Relevant articles and documents
A PROCESS FOR STEREOSELECTIVE SYNTHESIS OF LAMIVUDINE
-
Page/Page column 12, (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.
