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257869-92-4

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257869-92-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 257869-92-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,7,8,6 and 9 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 257869-92:
(8*2)+(7*5)+(6*7)+(5*8)+(4*6)+(3*9)+(2*9)+(1*2)=204
204 % 10 = 4
So 257869-92-4 is a valid CAS Registry Number.

257869-92-4Relevant academic research and scientific papers

Nucleobase-caged peptide nucleic acids: PNA/PNA duplex destabilization and light-triggered PNA/PNA recognition

Guha, Samit,Graf, Julia,Goericke, Bjoern,Diederichsen, Ulf

, p. 415 - 422 (2013/07/27)

The 2-(o-nitrophenyl)-propyl (NPP) group is used as caging group to mask the nucleobases adenine and cytosine in N-(2-aminoethyl)glycine peptide nucleic acids (aeg-PNA). The adeninyl and cytosinyl nucleo amino acid building blocks Fmoc-aNPP-aeg

Cyclic PNA hexamer-based compound: Modelling, synthesis and inhibition of the HIV-1 RNA dimerization process

Schwergold, Caroline,Depecker, Geoffrey,Giorgio, Christophe Di,Patino, Nadia,Jossinet, Fabrice,Ehresmann, Bernard,Terreux, Raphael,Cabrol-Bass, Daniel,Condom, Roger

, p. 5675 - 5687 (2007/10/03)

A cyclic molecule constituted by (i) a hexameric PNA moiety complementary to six among the nine residues of the dimerization initiation site loop of HIV-1 and (ii) a spacer tethering the N- to the C-extremities of the PNA, has been elaborated to inhibit the dimerization process of HIV-1 genome. This compound has been synthesized following a liquid-phase procedure (fully protected backbone approach). Preliminary agarose gel electrophoresis analyses have shown that the cyclic PNA conjugate is able to inhibit the HIV-1 dimerization.

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