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1,2-Bis-(2-{2-[2-(2-methoxy-ethoxy)-ethoxy]-ethoxy}-ethoxy)-benzene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

57721-96-7

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57721-96-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57721-96-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,7,2 and 1 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 57721-96:
(7*5)+(6*7)+(5*7)+(4*2)+(3*1)+(2*9)+(1*6)=147
147 % 10 = 7
So 57721-96-7 is a valid CAS Registry Number.

57721-96-7Relevant academic research and scientific papers

Poly(oxyethylene)-substituted copper and lutetium phthalocyanines

Toupance, Thierry,Bassoul, Pierre,Mineau, Ludovic,Simon, Jacques

, p. 11704 - 11710 (2007/10/03)

A new family of nonionic water-soluble lutetium bisphthalocyanines and a copper monophthalocyanine have been synthesized and characterized. Optical absorption determinations demonstrate aggregation processes in water. Optical microscopy, differential scanning calorimetry (DSC), and X-ray diffraction measurements have also been performed on the materials. The substituted copper complex yields a hexagonal columnar liquid crystal above 62°C; this mesophase can incorporate up to 16% (w/w) of triethylene glycol without significant disturbance of the structure. One of the substituted lutetium bisphthalocyanines affords a tetragonal columnar mesophase; the other bisphthalocyanine derivatives show only highly ordered crystalline-like phases. Conductivity measurements have been carried out on thin films of the previous derivatives to determine the relative electronic and ionic conduction contributions.

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