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125272-41-5

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125272-41-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 125272-41-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,5,2,7 and 2 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 125272-41:
(8*1)+(7*2)+(6*5)+(5*2)+(4*7)+(3*2)+(2*4)+(1*1)=105
105 % 10 = 5
So 125272-41-5 is a valid CAS Registry Number.

125272-41-5Downstream Products

125272-41-5Relevant articles and documents

A simple Preparation of 5'-O-dimethoxytrityl Deoxyribonucleoside 3'-O-Phosphorbisdiethylamidites as Useful Intermediates in the Synthesis of Oligodeoxyribonucleotides and Their Phosphorodiethylamidate Analogs on a Solid Support

Yamana, Kazushige,Nishijima, Yoshitaka,Oka, Atsushi,Nakano, Hidehiko,Sangen, Osamu,et al.

, p. 4135 - 4140 (2007/10/02)

5'-O-Dimethoxytrityl deoxyribonucleoside 3'-O-phosphorbisdiethylamidites were prepared by the selective phosphitylation of 5'-O-dimethoxytrityl deoxyribonucleosides with tris(diethylamino)phosphine in the presence of amine and tetrazol as catalyst.The bisamidites activated by p-nitrophenyltetrazole can be coupled efficiently with 5'hydroxyl group of nucleoside on a solid support.Oligodeoxyribonucleotides were obtined in high yields.The phosphorodiethylamidate linkage was obtained by non-aqueous oxidation using tert-butyl hydroperoxyde of the phosphordiethylamidite formed after the coupling.

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