543724-46-5

Basic information

• Product Name: Benzoic acid, 4-ethenyl-, 2-[2-(2-methoxyethoxy)ethoxy]ethyl ester
• CAS NO: 543724-46-5
• Molecular Formula: C16H22O5
• Molecular Weight: 294.348
• Mol File: 543724-46-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Benzoic acid, 4-ethenyl-, 2-[2-(2-methoxyethoxy)ethoxy]ethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Benzoic acid, 4-ethenyl-, 2-[2-(2-methoxyethoxy)ethoxy]ethyl ester(543724-46-5)
• EPA Substance Registry System: Benzoic acid, 4-ethenyl-, 2-[2-(2-methoxyethoxy)ethoxy]ethyl ester(543724-46-5)

Safety Data

• Hazardous Substances Data: 543724-46-5(Hazardous Substances Data)

Upstream product

• 2039-82-9 1-bromo-4-ethenyl-benzene 
• 112-35-6 triethylene glucol monomethyl ether 
• 1075-49-6 4-ethenylbenzoic acid 

Relevant articles and documents

Amphiphilic polymethacrylate- and polystyrene-based chemical delivery systems for damascones

Amphiphilic polystyrene- and polymethacrylate-based β-acyloxy ketones were investigated as potential delivery systems for the controlled release of damascones by retro-1,4-addition in applications of functional perfumery. A series of random copolymers being composed of the hydrophobic damascone-release unit and a second hydrophilic monomer were obtained by radical polymerization in organic solution by using 2,2-azobis[2-methylpropanenitrile] (AIBN) as the radical source (Schemes 2 and 3). A first evaluation of the polymer conjugates in acidic or alkaline buffered aqueous solution, and in the presence of a surfactant, showed that polymethacrylates and polystyrenes having a carboxylic acid function as hydrophilic group are particularly interesting for the targeted applications (Table 2). The release of δ-damascone (1) from polymers with poly(methacrylic acid) and poly(vinylbenzoic acid) comonomers in different stoichiometric ratios was thus followed over several days at pH 4, 7, and 9 by comparison of fluorescence probing, solvent extraction, and particle-size measurements (Tables 3 and 4). In acidic media, the polymers were found to be stable, and almost no δ-damascone (1) was released. In neutral or alkaline solution, where the carboxylic acid functions are deprotonated, the concentration of 1 increased over time. In the case of the polymethacrylates, the fluorescence probing experiments showed an increasing hydrophilicity of the polymer backbone with increasing fragrance release, whereas in the case of the polystyrene support, the hydrophilicity of the environment remained constant. These results suggest that the nature of the polymer backbone may have a stronger influence on the fragrance release than the ratio of hydrophilic and hydrophobic monomers in the polymer chain.