138840-81-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138840-81-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,8,4 and 0 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 138840-81:
(8*1)+(7*3)+(6*8)+(5*8)+(4*4)+(3*0)+(2*8)+(1*1)=150
150 % 10 = 0
So 138840-81-0 is a valid CAS Registry Number.
138840-81-0Relevant articles and documents
Novel dideoxynucleoside isosteres
Nair, Vasu,Lyons, Arthur G.,Purdy, David F.
, p. 8949 - 8968 (1991)
Novel 5-aza-7-deaza isosteres of the anti-HIV compounds, dideoxyinosine (ddI) and dideoxyguanosine (ddG), have been prepared by glycosylation of the corresponding isosteric bases with appropriately tailored dideoxyribose components. The glycosylation reac
