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959420-95-2

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959420-95-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 959420-95-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,5,9,4,2 and 0 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 959420-95:
(8*9)+(7*5)+(6*9)+(5*4)+(4*2)+(3*0)+(2*9)+(1*5)=212
212 % 10 = 2
So 959420-95-2 is a valid CAS Registry Number.

959420-95-2Downstream Products

959420-95-2Relevant articles and documents

Versatile synthesis of functional biodegradable polymers by combining ring-opening polymerization and postpolymerization modification via michael-type addition reaction

Chen, Wei,Yang, Huicui,Wang, Rong,Cheng, Ru,Meng, Fenghua,Wei, Wenxiang,Zhong, Zhiyuan

, p. 201 - 207 (2010)

Various functional biodegradable polymers were readily prepared based on novel cyclic carbonate monomers, acryloyl carbonate (AC) and methacryloyl carbonate (MAC), by combining ring-opening polymerization (ROP) and Michael-type conjugate addition. AC and MAC monomers were synthesized in four straightforward steps from 1,1,1-tris(hydroxymethyl)ethane with good overall yields (ca. 40%). AC and MAC were able to copolymerize with ε-caprolactone (ε-CL) and D,L-lactide (LA) in toluene at 110°C using stannous octoate as a catalyst, yielding biodegradable copolymers with controlled (meth)acryloyl functional groups and molecular weights. The acryloyl groups were amenable to the Michaeltype conjugate addition with varying thiol-containing molecules such as 2-mercaptoethanol, 3-mercapto-propanoic acid, cysteamine, cysteine, and arginine-glycine-aspartic acid-cysteine (RGDC) peptide under mild conditions, to provide biodegradable materials with vastly different functionalities (e.g., hydroxyl, carboxyl, amine, amino acid, and peptides) and properties (e.g., hydrophilicity, cell adhesion). Notably, 100% functionalization was achieved with 2-mercaptoethanol, cysteamine and cysteine. Initial cell culture studies demonstrated enhanced cell adhesion and growth on films containing functional RGDC peptides as compared to those of the parent copolymer. Therefore, combination of ROP and Michael-type conjugate addition provides a versatile access to diverse types of functional biodegradable materials.

POLYMERIC DEPOTS FOR LOCALIZATION OF AN AGENT TO BIOLOGICAL SITES

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Paragraph 00211, (2013/05/09)

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