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99657-51-9

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99657-51-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99657-51-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,6,5 and 7 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 99657-51:
(7*9)+(6*9)+(5*6)+(4*5)+(3*7)+(2*5)+(1*1)=199
199 % 10 = 9
So 99657-51-9 is a valid CAS Registry Number.

99657-51-9Downstream Products

99657-51-9Relevant articles and documents

Thermal Properties of Cholesteryl and β-Sitosteryl Esters: The Effect of the Rigid Core on the Thermal Stabilities of Cholesteric and Smectic A Phases

Takenaka, Shunsuke,Koden, Mitsuhiro,Kusabayashi, Shigekazu

, p. 666 - 671 (1986)

The effect of a central linkage X on the thermal stabilities of the cholesteric and smectic A phases of cholesteryl and β-sitosteryl esters of 4-aryl-X-benzoic and 4-aryl-X-cyclohexanecarboxylic acids (X=-COO-, -CH=N-, -N=N-, -CO-, etc.) has been examined.In both series, the cholesteric-isotropic and smectic A-cholesteric transition temperatures and the transition enthalpies are discussed in terms of the molecular structures and also the angular correlation parameter J22 of the carboxy functions.The transition enthalpies for the smectic A-cholesteric transition are also discussed in terms of the McMillan theory.

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