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169687-74-5

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169687-74-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 169687-74-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,9,6,8 and 7 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 169687-74:
(8*1)+(7*6)+(6*9)+(5*6)+(4*8)+(3*7)+(2*7)+(1*4)=205
205 % 10 = 5
So 169687-74-5 is a valid CAS Registry Number.

169687-74-5Relevant articles and documents

Synthesis and properties of O-β-D-ribofuranosyl-(1″- 2′)-adenosine-5″-O-phosphate and its derivatives

Rodionov, Andrei A.,Efimtseva, Ekaterina V.,Mikhailov, Sergey N.,Rozenski, Jef,Luyten, Ingrid,Herdewijn, Piet

, p. 1847 - 1859 (2007/10/03)

The synthesis of O-β-D-ribofuranosyl-(1″-2′)-adenosine-5″-O-phosphate and its suitably protected derivative for oligonucleotide synthesis have been developed.

Studies on synthesis and structure of O-β-D- ribofuranosyl(1'→2')ribonucleosides and oligonucleotides

Markiewicz, Wojciech T.,Niewczyk, Anna,Gdaniec, Zofia,Adamiak, Dorota A.,Dauter, Zbigniew,Rypniewski, Wojciech,Chmielewski, Marcin

, p. 411 - 424 (2007/10/03)

Minor nucleosides found in several eukaryotic initiator tRNAs(i)(Met), O-β-D-ribofuranosyl(1'→2')adenosine and -guanosine (Ar and Gr), as well as their pyrimidine analogues, were obtained from N-protected 3',5'-O-(1,1,3,3- tetraisopropyldisiloxane-1,3-diyl)ribonucleosides and 1-O-acetyl-2,3,5-tri- O-benzoyl-β-D-ribofuranose in the presence of tin tetrachloride in 1,2- dichloroethane. A crystal structure has been solved for 2'-O-ribosyluridine. The 3'-phosphoramidites of protected 2'-O-ribosylribonucleosides were prepared as the reagents for 2'-O-ribofuranosyloligonucleotides synthesis. O- β-D-Ribofuranosyl(1'→2')adenylyl(3'→5')guanosine (ArpG) was obtained and its structure was analyzed by NMR spectroscopy.

Synthesis of Disaccharide Nucleosides and Their Incorporation into Oligonucleotides

Efimtseva, Ekaterina V.,Ermolinsky, Boris S.,Fomitcheva, Marina V.,Meshkov, Sergei V.,Padyukova, Nelly Sh.,et al.

, p. S206 - S209 (2007/10/03)

A high yield synthesis of 2'-O-ribofuranosyl nucleosides has been achieved and incorporation of the cytosine analogue into oligonucleotides was accomplished without difficulties.The supplementary cis diol group thus present in the middle of an oligonucleotide could be easily converted to a reactive dialdehyde moiety.

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