128981-11-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128981-11-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,9,8 and 1 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 128981-11:
(8*1)+(7*2)+(6*8)+(5*9)+(4*8)+(3*1)+(2*1)+(1*1)=153
153 % 10 = 3
So 128981-11-3 is a valid CAS Registry Number.
128981-11-3Relevant articles and documents
Synthesis of oligonucleotide phosphorodithioates
Beaton,Brill,Grandas,Ma,Nielsen,Yau,Caruthers
, p. 2377 - 2388 (1991)
The synthesis of DNA containing sulfur at the two nonbonding internucleotide valencies is reported. Several different routes using either tervalent or pentavalent mononucleotide synthons are described.
