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).
lsof is a command meaning list open files, which is used in many Unix-like systems to report a list of all open files and the processes that opened them.This open source utility was developed and supported by Victor A. Abell, the retired Associate Director of the Purdue University Computing Center.sof is a command meaning list open files, which is used in many Unix-like systems to report a list of all open files and the processes that opened them.