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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 articles and documents

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

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