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1447497-18-8

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1447497-18-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1447497-18-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,4,7,4,9 and 7 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1447497-18:
(9*1)+(8*4)+(7*4)+(6*7)+(5*4)+(4*9)+(3*7)+(2*1)+(1*8)=198
198 % 10 = 8
So 1447497-18-8 is a valid CAS Registry Number.

1447497-18-8Downstream Products

1447497-18-8Relevant articles and documents

Bis-TEGylated poly(p-benzamide)s: Combining organosolubility with shape persistence

Schulze, Maren,Michen, Benjamin,Fink, Alke,Kilbinger, Andreas F. M.

, p. 5520 - 5530 (2013/08/23)

The synthesis of perfectly planar, bis-substituted aromatic polyamides is reported herein. With highly flexible triethylene glycol chains attached and conformational restriction through intramolecular, bifurcated hydrogen bonds these are among the most shape-persistent yet organo-soluble polymers to date. Starting from 4-nitrosalicylic acid, our group developed a route to phenyl-2,5-bis-TEGylated aminobenzoate, which could be polymerized by addition of lithium bis(trimethylsilyl)amide (LiHMDS). Since this technique has not been applied to step-growth polycondensations of polyaramides so far, the influence of two different solvents and an N-protective group was investigated. Therefore, substituted phenyl aminobenzoate derivatives carrying a free amine or an N-protective group have been polymerized. Additionally, the tendency for self-assembly of the readily soluble bis-TEGylated poly(p-benzamide) was observed by transmission electron microscopy (TEM) in the dried state. Dynamic light scattering (DLS) measurements of chloroform solutions did not indicate the formation of aggregates. Thus, intermolecular interactions, which other aromatic polyamides typically exhibit, are prevented. The access to bis-substituted, entirely rigid poly(p-benzamide)s via this new polycondensation method paves the way for exciting new structures in materials science and supramolecular chemistry.

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