E 2461 (OTTO) 4-Ethylphenol, 97% Cas 123-07-9 - use in the determination of 4-ethylguaiacol and 4-ethylphenol in the aroma of red wines using headspace-solid-phase microextraction method. It is a chemical reagent used in the synthesis of 5-HT1A receptor agonists endowed with antinociceptive activity in vivo.