<prompt> Cetrimide isAldehydeHalogenPhenolQuaernary ammonium compounds  <response>: Cetrimide is Quaernary ammonium compounds. Lysol, Cresol derivatives of coal tar are a type of phenols Formaldehyde and glutaraldehyde are aldehydes Iodine and chlorine are halogens Ref : Ananthanarayana textbook of Microbiology 9th edition Pgno : 33 