104121-25-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 104121-25-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,1,2 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 104121-25:
(8*1)+(7*0)+(6*4)+(5*1)+(4*2)+(3*1)+(2*2)+(1*5)=57
57 % 10 = 7
So 104121-25-7 is a valid CAS Registry Number.
104121-25-7Relevant academic research and scientific papers
Regioselective synthesis of 9-substituted purine acyclonucleoside derivatives
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, (2008/06/13)
A process for preparing 9-substituted guanine-containing acyclonucleosides comprising selective alkylation at the 9-position of the purine by utilizing a blocking group at the 6-position.
