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862903-80-8

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862903-80-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 862903-80-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,6,2,9,0 and 3 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 862903-80:
(8*8)+(7*6)+(6*2)+(5*9)+(4*0)+(3*3)+(2*8)+(1*0)=188
188 % 10 = 8
So 862903-80-8 is a valid CAS Registry Number.

862903-80-8Relevant articles and documents

Oligoindole-based foldamers with a helical conformation induced by chloride

Chang, Kyoung-Jin,Kang, Byung-Nam,Lee, Min-Hee,Jeong, Kyu-Sung

, p. 12214 - 12215 (2005)

As a new type of foldamers, oligoindoles containing 4, 6, and 8 indole rings were synthesized, and their folding properties were characterized by a combination of 1H NMR techniques and UV/visible titration experiments. When chloride was added, the NH signals of the oligoindoles were downfield shifted as a result of hydrogen-bond formation, and the aromatic signals were upfield shifted by stacking between two indoles. Moreover, the ROESY experiment provided definitive NOE evidence for the helical stacking in the presence of chloride. Finally, the UV/visible titration experiments demonstrated that the oligoindoles formed 1:1 complexes with chloride, and the association constants greatly increased with increasing the number of the indole NHs. These observations are all consistent with the fact that oligoindoles adopt a helical conformation when complexed with chloride by hydrogen-bonding interactions. Copyright

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