The CAS Registry Mumber 144944-98-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,9,4 and 4 respectively; the second part has 2 digits, 9 and 8 respectively. Calculate Digit Verification of CAS Registry Number 144944-98: (8*1)+(7*4)+(6*4)+(5*9)+(4*4)+(3*4)+(2*9)+(1*8)=159 159 % 10 = 9 So 144944-98-9 is a valid CAS Registry Number.
A general synthesis of 5,7-diaminoimidazo[4,5-b]pyridine ribosides ('2-amino-1-deazaadenosines') from 5-amino-4-imidazolecarboxamide riboside (AICA riboside)
Francis,Moskal
, p. 1288 - 1295 (1992)
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