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Cetrimonium bromide; cetyltrimethylammonium bromide; hexadecyltrimethylammonium bromide; CTAB] is a quaternary ammonium surfactant.
C 1887 (OTTO) n-Cetyl n,n,n,tri methyl ammonium bromide, GR 99% - used for the isolation of plant high molecular weight DNA as well as plant DNA for use in PCR analysis. It has also been used to preciptate nucleic acids.