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168965-49-9

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168965-49-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 168965-49-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,8,9,6 and 5 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 168965-49:
(8*1)+(7*6)+(6*8)+(5*9)+(4*6)+(3*5)+(2*4)+(1*9)=199
199 % 10 = 9
So 168965-49-9 is a valid CAS Registry Number.

168965-49-9Relevant articles and documents

Synthesis, conformation, and biological activity of teleocidin mimics, benzolactams. A clarification of the conformational flexibility problem in structure-activity studies of teleocidins

Endo, Yasuyuki,Ohno, Michihiro,Hirano, Masaaki,Itai, Akiko,Shudo, Koichi

, p. 1841 - 1855 (2007/10/03)

Tumor-promoter teleocidins and their active congeners (indolactams) are known to exist in an equilibrium between at least two conformational states in solution, the twist and sofa form, due to cis-trans isomerization of the amide bond and the steric effects of substituents on the nine-membered lactam ring. Benzolactam-Vs, in which the indole ring of indolactams is replaced with a benzene ring, were designed and synthesized in an attempt to reproduce the active conformation of teleocidins. Among these benzolactams, eight-membered lactams (benzolactam-V8) can only exist in the twist form, and 9- and 10-membered lactams (benzolactam-V9 and -V10) exist exclusively in the sofa form in solution. The stronger biological activity of benzolactam-V-8-310 than that of indolactam-V (IL-V) and the inactivity of benzolactam-V-9-310 for differentiation inducing activity of HL-60 clearly indicated that the twist form is close to the active conformation of teleocidins.

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