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676598-19-9

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676598-19-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 676598-19-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,6,5,9 and 8 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 676598-19:
(8*6)+(7*7)+(6*6)+(5*5)+(4*9)+(3*8)+(2*1)+(1*9)=229
229 % 10 = 9
So 676598-19-9 is a valid CAS Registry Number.

676598-19-9Relevant articles and documents

Synthesis and DNA/RNA Binding Properties of Conformationally Constrained Pyrrolidinyl PNA with a Tetrahydrofuran Backbone Deriving from Deoxyribose

Sriwarom, Pitchanun,Padungros, Panuwat,Vilaivan, Tirayut

, p. 7058 - 7065 (2015/07/28)

Sugar-derived cyclic β-amino acids are important building blocks for designing of foldamers and other biomimetic structures. We report herein the first synthesis of a C-activated N-Fmoc-protected trans-(2S,3S)-3-aminotetrahydrofuran-2-carboxylic acid as a building block for Fmoc solid phase peptide synthesis. Starting from 2-deoxy-d-ribose, the product is obtained in a 6.7% overall yield following an 11-step reaction sequence. The tetrahydrofuran amino acid is used as a building block for a new peptide nucleic acid (PNA), which exhibits excellent DNA binding affinity with high specificity. It also shows preference for binding to DNA over RNA and specifically in the antiparallel orientation. In addition, the presence of the hydrophilic tetrahydrofuran ring in the PNA structure reduces nonspecific interactions and self-aggregation, which is a common problem in PNA due to its hydrophobic nature.

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