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221898-48-2

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221898-48-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221898-48-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,8,9 and 8 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 221898-48:
(8*2)+(7*2)+(6*1)+(5*8)+(4*9)+(3*8)+(2*4)+(1*8)=152
152 % 10 = 2
So 221898-48-2 is a valid CAS Registry Number.

221898-48-2Downstream Products

221898-48-2Relevant academic research and scientific papers

Toward folding control in oligomers and polymers

Schmidt, Rolf,Decher, Gero,Mesini, Philippe

, p. 1677 - 1680 (2007/10/03)

A facile synthetic route affording polycondensable monomers containing alkyl chains connected to a rigid aromatic core allowing chain folding was developed. The stepwise condensation of the monomer was shown to afford dimer, tetramer and was further proved to be applicable to higher oligomers. Such oligomers composed of 'tinker toy' building blocks may be of interest for inducing controlled conformations in nanostructured materials.

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