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181075-66-1

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181075-66-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 181075-66-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,0,7 and 5 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 181075-66:
(8*1)+(7*8)+(6*1)+(5*0)+(4*7)+(3*5)+(2*6)+(1*6)=131
131 % 10 = 1
So 181075-66-1 is a valid CAS Registry Number.

181075-66-1Relevant articles and documents

A multifaceted secondary structure mimic based on piperidine-piperidinones

Xin, Dongyue,Perez, Lisa M.,Ioerger, Thomas R.,Burgess, Kevin

, p. 3594 - 3598 (2014/04/17)

Minimalist secondary structure mimics are typically made to resemble one interface in a protein-protein interaction (PPI), and thus perturb it. We recently proposed suitable chemotypes can be matched with interface regions directly, without regard for secondary structures. Here we describe a modular synthesis of a new chemotype 1, simulation of its solution-state conformational ensemble, and correlation of that with ideal secondary structures and real interface regions in PPIs. Scaffold 1 presents amino acid side-chains that are quite separated from each other, in orientations that closely resemble ideal sheet or helical structures, similar non-ideal structures at PPI interfaces, and regions of other PPI interfaces where the mimic conformation does not resemble any secondary structure. 68 different PPIs where conformations of 1 matched well were identified. A new method is also presented to determine the relevance of a minimalist mimic crystal structure to its solution conformations. Thus dld-1-faf crystallized in a conformation that is estimated to be 0.91 kcal-mol-1 above the minimum energy solution state. Do we know, when designing a new peptidomimetic scaffold like the one shown, how it can resemble secondary structures? Design and modular synthesis of this elongated mimic is reported, and the structure is related to ideal and real structures at PPI interfaces.

Divergent reaction pathways in amine additions to β-lactone electrophiles. An application to β-peptide synthesis

Nelson, Scott G.,Spencer, Keith L.,Cheung, Wing S.,Mamie, Steven J.

, p. 7081 - 7091 (2007/10/03)

β-Lactone electrophiles are subject to regioselective addition-elimination (AE) or SN2 ring opening with various nitrogen-based nucleophiles. Primary and secondary amines promote AE ring opening to deliver products that are the functional equiv

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