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831179-82-9

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831179-82-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 831179-82-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,3,1,1,7 and 9 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 831179-82:
(8*8)+(7*3)+(6*1)+(5*1)+(4*7)+(3*9)+(2*8)+(1*2)=169
169 % 10 = 9
So 831179-82-9 is a valid CAS Registry Number.

831179-82-9Relevant articles and documents

Synthesis and characterization of fluorescent poly(aromatic amide) dendrimers

Aulenta, Francesca,Drew, Michael G. B.,Foster, Alison,Hayes, Wayne,Rannard, Steven,Thornthwaite, David W.,Worrall, David R.,Youngs, Tristan G. A.

, p. 63 - 78 (2005)

(Chemical Equation Presented). The synthesis of a series of poly(aromatic amide) dendrimers up to the second generation is described herein. The AB 2 building block used throughout the synthesis of the dendrimers was the allyl ester of 3,5-diaminocinnamic acid, which has been synthesized from 3,5-dinitrobenzoic acid in good yield with use of a four-step procedure. Dendron synthesis was achieved via a convergent approach with use of a sequence of deprotection/coupling steps. Two commercially available alcohols, L-menthol and citronellol, were coupled to the AB2 monomer by using an alkyl diacid spacer and two core units; 1,7-diaminoheptane and tris(2-aminoethyl)amine have been used to produce the final dendrimers. Characterization was carried out by NMK and IR spectroscopies, MALDI-TOF mass spectrometry, GPC, and DSC. The novel monomer and dendritic derivatives exhibited a strong fluorescence emission in the visible region (λ ≈ 500 nm) of the spectrum and a weak emission in the near-infrared (λ ≈ 850 nm) upon excitation in the near-UV region. The fluorescence emission characteristics were found to be solvent and dendrimer generation dependent.

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