benzododecinium bromide benzododecinium bromide benzododecinium bromide (systematic name dimethyldodecylbenzylammonium bromide) is a quaternary ammonium compound used as antiseptic and disinfectant (phenol coefficient is 20-30). it is highly soluble in water and has properties of cationic surfactant. benzododecinium bromide names preferred iupac name n-benzyl-n,n-dimethyldodecan-1-aminium bromide identifiers cas number 7281-04-1 n 3d model (jsmol) interactive image chembl chembl2355417 n chemspider 22165 y echa infocard 100.027.908 ec number 230-698-4 pubchem cid 23705 unii iry12b2tq6 n comptox dashboard (epa) dtxsid4048698 inchi inchi=1s/c21h38n.brh/c1-4-5-6-7-8-9-10-11-12-16-19-22(2,3)20-21-17-14-13-15-18-21;/h13-15,17-18h,4-12,16,19-20h2,1-3h3;1h/q+1;/p-1 ykey: khslhyauzspbiu-uhfffaoysa-m yinchi=1/c21h38n.brh/c1-4-5-6-7-8-9-10-11-12-16-19-22(2,3)20-21-17-14-13-15-18-21;/h13-15,17-18h,4-12,16,19-20h2,1-3h3;1h/q+1;/p-1key: khslhyauzspbiu-rewhxwofah smiles .c1ccccc1c(c)(cccccccccccc)c properties chemical formula c21h38n+ · br− molar mass 384.437 g·mol−1 pharmacology atc code d09aa05 (who) except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). n verify (what is yn ?) infobox references benzododecinium bromide is effective against gram-positive microbes. in lower concentrations, its activity against conditionally gram-negative microorganisms (such as proteus, pseudomonas, clostridium tetani etc.) is uncertain. it is not effective against mycobacterium tuberculosis and bacterial spores. longer expositions may inactivate some viruses. benzododecinium bromide is an active ingredient in the trademarked antiseptic product ajatin produced in the czech republic. in place of bromide, the benzododecinium cation may be used with chloride or another anion.