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1252661-82-7

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1252661-82-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1252661-82-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,2,6,6 and 1 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1252661-82:
(9*1)+(8*2)+(7*5)+(6*2)+(5*6)+(4*6)+(3*1)+(2*8)+(1*2)=147
147 % 10 = 7
So 1252661-82-7 is a valid CAS Registry Number.

1252661-82-7Relevant articles and documents

Homotropic cooperativity of cyclodextrin dimer as an artificial hydrolase

Ikeda, Hiroshi,Nishikawa, Satoshi,Yamamoto, Yukinori,Ueno, Akihiko

experimental part, p. 1 - 7 (2010/12/18)

Three kinds of cyclodextrin (CD) dimer (one homo-dimer of β-CD and two types of hetero-dimer of α-CD and β-CD) were synthesized as artificial hydrolases. The initial rates of the cleavage reaction of p-nitrophenyl methoxyethoxyethoxyacetate (8) by each of the three dimers were measured under the condition of excess of substrate at 25 °C in a pH 7.4 phosphate buffer solution. In a plot of initial rate against concentration of the substrate, the reaction with the homo-dimer (βCβH 5) gave a sigmoidal curve, whereas the reaction with either of the hetero-dimers gave a simple hyperbolic curve. Only βCβH 5 showed homotropic cooperativity, with a Hill constant of 1.8.

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