All deionized water was obtained from a Milli-Q2 system and exhibited a specific resistance of at least 18 MΩ cm. Methanol (99.8%) and 1-pentanol (≥99%) were obtained from Sigma-Aldrich (Milwaukee, WI), as were tetraoctylammonium bromide (TOABr) (98%), tetraoctylammonium chloride (TOACl) (≥97%), menthol (99%), and decanoic acid (98%). All were employed without further purification. Concentrated hydrochloric acid (Optima™ grade), acetone (Optima™ grade), 1-propanol (HPLC grade), 1-butanol (HPLC grade), and hexane (HPLC grade), were purchased from Fisher Scientific (Pittsburgh, PA), while standard (0.100 N) sodium hydroxide solution was obtained from Ricca Chemical Company (Batesville, IN). Ethanol (≥99.5%) was purchased from Decon Labs Inc. (King of Prussia, PA). For liquid scintillation counting (LSC), Ultima Gold™ (Perkin Elmer Corp., Waltham, MA) LS cocktail was employed.
With the exception of phenol (Moravek Biochemicals, Brea, CA) and toluene (American Radiolabeled Chemicals, St. Louis, MO), all 14C-labeled reagents (aniline, benzoic acid, chlorobenzene, phthalic acid, p-toluic acid, and salicylic acid) were obtained from Sigma-Aldrich.
With the exception of phenol (Moravek Biochemicals, Brea, CA) and toluene (American Radiolabeled Chemicals, St. Louis, MO), all 14C-labeled reagents (aniline, benzoic acid, chlorobenzene, phthalic acid, p-toluic acid, and salicylic acid) were obtained from Sigma-Aldrich.