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1258503-57-9

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1258503-57-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1258503-57-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,8,5,0 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1258503-57:
(9*1)+(8*2)+(7*5)+(6*8)+(5*5)+(4*0)+(3*3)+(2*5)+(1*7)=159
159 % 10 = 9
So 1258503-57-9 is a valid CAS Registry Number.

1258503-57-9Downstream Products

1258503-57-9Relevant articles and documents

The spermine-bisaryl conjugate as a potent inducer of B- to Z-DNA transition

Doi, Issei,Tsuji, Genichiro,Kawakami, Kyoko,Nakagawa, Osamu,Taniguchi, Yosuke,Sasaki, Shigeki

, p. 11993 - 11999 (2010)

DNA containing alternating purine and pyrimidine repeats has the potential to adopt the Z-DNA structure, one of the well-studied structures besides A- and B-DNA. Despite a number of molecular models that have been proposed to explain the mechanism for B→Z transition, there is continued discussion on the mechanism and physiological role of this transition. In this study, we have found that the bis(2-naphthyl)-maleimide-spermine conjugate (3c) exhibits a remarkable ability to cause the B→Z transition of d(CGCGCG)2 at low salt concentrations. Using isothermal titration calorimetry (ITC) we show that the B→Z transition induced by 3c is both enthalpically and entropically favorable. The ligand might effect the dehydration of B-DNA, which leads to the B→Z transition. Interestingly, an intermediate CD between the B and Z forms was observed in the pH-dependent transition in the presence of the ligand. The unique structure and characteristics of the ligand designed in this investigation will be useful for the study of Z-DNA. From B to Z: The bis(2-naphthyl)maleimide-spermine conjugate shown in the figure exhibits a remarkable ability to cause the B→Z transition of d(CGCGCG)2 at low salt concentrations. A stable intermediate between the B and Z forms was observed in the presence of the ligand at about pH 8.

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