Synthesis [edit]. Quaternary ammonium compounds are prepared by the alkylation of tertiary amines with a halocarbon. In older literature this is often called a Menshutkin reaction, however modern chemists usually refer to it simply as quaternization.uaternary ammonium compounds have also been shown to have antimicrobial activity. Certain quaternary ammonium compounds, especially those containing long alkyl chains, are used as antimicrobials and disinfectants.
Answer: XPF files are Uncommon Files primarily associated with XaoS Position File (Jan Hubicka Thomas Marsh Zoltan Kovacs and Others).
Answer: QIF files are Data Files primarily associated with DESQview Compressed Font Archive (Symantec Corporation). QIF files are also associated with Quicken Interchange Format (Intuit Inc.), QuickTime Image (Apple Inc.) and FileViewPro. Additional types of files may also be using the QIF file extension.indows might tell you that you can't open it, or in the worst case, you might encounter a QIF file related error message. Before you can open a QIF file, you'll need to figure out what kind of file the QIF file extension refers to.