SEARCH Articles Figures Tables Alkyl quaternary ammonium salts Alkyl quaternary ammonium salts Alkyl salts Ammonium salts, alkyl Ammonium salts, alkyl quaternary, thermal stability Cinchona, quaternary ammonium salts ester, alkylation Quaternary ammonium salts Quaternary ammonium salts, alkylations with Quaternary salts Salts, alkylation