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ethyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate; CAS No.: 36294-24-3; ethyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate. PROPERTIES: This ester compound is a colorless liquid with molecular formula C15H24O3. It has molecular weight of 252.35 g/mol and boiling point around 250-260 C at 760 mmHg. It is miscible with common organic solvents and has limited water solubility. Recommended storage is in tightly sealed containers at room temperature. Being an ester, it may cause eye irritation; standard laboratory safety practices should be observed. APPLICATIONS: In the polymer industry, this compound serves as antioxidant additive for preventing thermal and oxidative degradation of polymers. The hydroxyphenyl group acts as radical scavenger while the di-tert-butyl substituents provide steric hindrance to protect active hydrogen (Polymer Degradation and Stability). In pharmaceutical applications, it acts as intermediate for producing non-steroidal anti-inflammatory prodrugs where the ester group is hydrolyzed in vivo to release active compound (Journal of Pharmacy and Pharmacology). The tert-butyl groups provide lipophilicity that enhances membrane permeability. Additionally, it functions as building block for producing agrochemicals though agricultural uses are excluded per your request. Its hydroxyphenyl and ester functionalities enable diverse reaction pathways including amidation and transesterification for constructing various organic compounds.