127840-90-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 127840-90-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,8,4 and 0 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 127840-90:
(8*1)+(7*2)+(6*7)+(5*8)+(4*4)+(3*0)+(2*9)+(1*0)=138
138 % 10 = 8
So 127840-90-8 is a valid CAS Registry Number.
127840-90-8Relevant articles and documents
SYNTHESIS OF 2',3'-DISUBSTITUTED 3'-DEOXYTHYMIDINE DERIVATIVES
Herdewijn, P.,Aerschot, A. Van
, p. 943 - 948 (2007/10/02)
Reaction of 2 with DAST followed by detritylation and monomethoxytritylation afforded 34percent of the fluorinated nucleoside 3.This intermediate was used to prepare the 3'-azido-2'-fluoro- and 2',3'-difluoro substituted 5-methyluridine analogues 7 and 11, respectively.
