138903-98-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138903-98-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,9,0 and 3 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 138903-98:
(8*1)+(7*3)+(6*8)+(5*9)+(4*0)+(3*3)+(2*9)+(1*8)=157
157 % 10 = 7
So 138903-98-7 is a valid CAS Registry Number.
138903-98-7Relevant academic research and scientific papers
Carbocyclic analogs of nucleosides via modified Mitsunobu reactions
Jenny,Previsani,Benner
, p. 7029 - 7032 (2007/10/02)
A set of carbocyclic nucleoside analogs have been prepared using a novel modification of the Mitsunobu reaction. This approach helps solve an important synthetic problem in the preparation of carbocyclic analogs of nucleosides.
