145259-77-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 145259-77-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,5,2,5 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 145259-77:
(8*1)+(7*4)+(6*5)+(5*2)+(4*5)+(3*9)+(2*7)+(1*7)=144
144 % 10 = 4
So 145259-77-4 is a valid CAS Registry Number.
145259-77-4Relevant articles and documents
H-phosphonate DNA synthesis without amino protection
Kung,Jones
, p. 5869 - 5872 (1992)
DNA synthesis by the H-phosphonate method does not require the use of amino protecting groups. The cytosine amino group, and the guanine O6/N1 positions, do react with the condensing agent to some extent, but these derivatives are cleaved under the standa