104711-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 104711-71-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,7,1 and 1 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 104711-71:
(8*1)+(7*0)+(6*4)+(5*7)+(4*1)+(3*1)+(2*7)+(1*1)=89
89 % 10 = 9
So 104711-71-9 is a valid CAS Registry Number.
104711-71-9Relevant articles and documents
Synthesis of novel heterocycles: Oxazolo[4,5-b]pyridines and oxazolo[4,5-d]pyrimidines
Doise,Dennin,Blondeau,Sliwa
, p. 1155 - 1156 (1990)
Novel purine isosters (title compounds) have been prepared by condensation of the appropriate o-hydroxyaminoazine with ethyl orthoformate; extension to other orthoesters and to benzyl thioacetimidate afford 2-alkyl substituted derivatives of these new fus