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1044598-79-9

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1044598-79-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1044598-79-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,4,4,5,9 and 8 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1044598-79:
(9*1)+(8*0)+(7*4)+(6*4)+(5*5)+(4*9)+(3*8)+(2*7)+(1*9)=169
169 % 10 = 9
So 1044598-79-9 is a valid CAS Registry Number.

1044598-79-9Upstream product

1044598-79-9Relevant articles and documents

Synthesis and arm dissociation in molecular stars with a spoked wheel core and bottlebrush arms

Burdyska, Joanna,Li, Yuanchao,Aggarwal, Anant Vikas,H?ger, Sigurd,Sheiko, Sergei S.,Matyjaszewski, Krzysztof

supporting information, p. 12762 - 12770 (2014/12/10)

Unique star-like polymeric architectures composed of bottlebrush arms and a molecular spoked wheel (MSW) core were prepared by atom transfer radical polymerization (ATRP). A hexahydroxy-functionalized MSW (MSW6-OH) was synthesized and converted into a six-fold ATRP initiator (MSW6-Br). Linear chain arms were grafted from MSW6-Br and subsequently functionalized with ATRP moieties to form six-arm macroinitiators. Grafting of side chains from the macroinitiators yielded four different star-shaped bottlebrushes with varying lengths of arms and side chains, i.e., (450-g-20)6, (450-g-40)6, (300-g-60)6, and (300-g-150)6. Gel permeation chromatography analysis and molecular imaging by atomic force microscopy confirmed the formation of well-defined macromolecules with narrow molecular weight distributions. Upon adsorption to an aqueous substrate, the bottlebrush arms underwent prompt dissociation from the MSW core, followed by scission of covalent bonds in the bottlebrush backbones. The preferential cleavage of the arms is attributed to strong steric repulsion between bottlebrushes at the MSW branching center. Star-shaped macroinitiators may undergo aggregation which can be prevented by sonication.

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