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287171-13-5

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287171-13-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 287171-13-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,7,1,7 and 1 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 287171-13:
(8*2)+(7*8)+(6*7)+(5*1)+(4*7)+(3*1)+(2*1)+(1*3)=155
155 % 10 = 5
So 287171-13-5 is a valid CAS Registry Number.

287171-13-5Relevant articles and documents

Hierarchical growth of chiral self-assembled structures in protic media

Brunsveld,Zhang,Glasbeek,Vekemans,Meijer

, p. 6175 - 6182 (2000)

The location of nine chiral penta(ethylene oxide) side chains at the periphery of a C3-symmetrical hydrogen-bonded extended core gives rise to a thermotropic discotic liquid crystalline material that shows lyotropic phases in polar, protic media. The molecular stacks self-assemble in a reversible and hierarchical fashion, and specific and subtle solvent-molecule interactions together with the created hydrophobic microenvironment account for an unprecedented stabilization of a preferred handedness of the helical stacks by cooperative intermolecular interactions. The presence of either chirality or achirality at the supramolecular level in the stacks can be tuned by temperature and solvent as judged from circular dichroism spectroscopy. A hierarchical growth of the self-assembly is revealed using a variety of spectroscopic techniques and differential scanning calorimetry.

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