Cetrimonium, cetyl trimethylammonium, or hexadecyltrimethylammonium is a
quaternary ammonium cation
In chemistry, quaternary ammonium cations, also known as quats, are positively charged polyatomic ions of the structure , R being an alkyl group or an aryl group. Unlike the ammonium ion () and the primary, secondary, or tertiary ammonium cations ...
whose salts are used as antiseptics:
*
Cetrimonium bromide
*
Cetrimonium chloride
Cetrimonium chloride, or cetyltrimethylammonium chloride (CTAC), is a topical antiseptic and surfactant. Long-chain quaternary ammonium surfactants, such as cetyltrimethylammonium chloride (CTAC), are generally combined with long-chain fatty alc ...
They have the
ATC codes (as skin antiseptics) and (as throat antiseptics).
{{Chemistry index
Antiseptics
Quaternary ammonium compounds