Cetrimide cetyltrimethylammonium

Cetraria islandica extract Cetraria islandicus. See Iceland moss (Cetraria islandicus) extract Cetrimide BP, Cetrimide BP, Cetrimide Cetrimide. SeeCetrimonium bromide Cetrimonium bromide CAS 57-09-0 EINECS/ELINCS 200-311-3 Synonyms CETAB Cetrimide Cetyltrimethylammonium bromide CTAB Hexadecyltrimethylammonium bromide HTAB Trimethylcetylammonium bromide N,N,N-Trimethyl-1-hexadecanaminium... 

Fig. 10.8 A where the R substituents are alkyl or heterocyclic radicals to give compounds such as cetyltrimethylammonium bromide (cetrimide), cetylpyridinium chloride and benzalkonium chloride. Inspection of the stmctures of these compounds (Fig. 10.8B) indicates the requirement for good antimicrobial activily of having a chain length in the range Cg to Cig in at least one of the R substituents. In the pyridinium compounds (Fig. 10.8C) three of the four covalent links may be satisfied by the nitrogen in a pyridine ring. Polymeric quaternary ammonium salts such as polyquatemium 1 are finding increasing use as preservatives.

Several types of ion-pair reagents have been used among them are petanesulfonate, tri-ethylammonium, tetrapropylammonium, tetrabutylammonium, and cetyltrimethylammonium (hexadecyltrimethylammonium or cetrimide). The last two compounds are the most widely used. However, according to Herrmann et al. (24), tetrabutylammonium is the ion pair of choice, because it attains adsorption equilibrium more rapidly than cetrimide. 

Takeuchi et al. [343] described an indirect photometric detection method for anions in micro high performance liquid chromatography. Micro anion exchange octadecylsilica columns permanently coated with the hydrophobic cetyltrimethylammonium ion (cetrimide) were used in the high performance liquid chromatography of chloride, nitrate... 

SYNS ACETOQUAT CTAB BROMAT CEE DEE CENTIMIDE CETAB CETAROL CETAVLON CETRIMIDE CETRIMONIUM BROMIDE CETYL- MINE CETY LTRIMETHYLAMMONIUM BROMIDE N-CETYLTRIMETHYLAMMONIUM BROMIDE CIRRASODOD CTAB CYCLOTON V N-HEXA-DECYLTRIMETHYLAMMONIUM BROMIDE N-HEXADECYL-N,NNI-TRIMETHYL. MMONIUM... 

Indian chem ists report that other cationic agents are even more eflicient for generation of dichlorocarbene, for example, cetyltrimethylammonium chloride and an Indian detergent sold under the trademark Cetrimide. Starks" has used in the same way a tricaprylylmethylammonium chloride, " in which the alkyl groups are a mixture of Cs"C,2 straight chains. 

Smith ARW, Lambert PA, Hammond SM, Jessup C. The differing effects of cetyltrimethylammonium bromide and cetrimide BP upon growing cultures of Escherichia coli NCIB 8277. J Appl Bacterial 1975 38 143-149. 

Cationic nanoparticles can also be obtained with cationic surfactants by incorporation during preparation or by incubation in a cationic surfactant. Didodecyldimethylammonium bromide (DMAB), dodecyltri-methylammonium bromide (DTAB), cetyltrimethylammonium bromide (CTAB), dimethyl(dioctyldodecyl)ammonium bromide (DODAB), benzyl-alkonium chloride and cetrimide are widely used as cationic surfactants for this purpose. PLGA nanoparticles which were coated with DMAB were developed for oral delivery of the anticancer drug paclitaxel. This formulation compared with intravenous administration of paclitaxel with cremo-phor showed an equivalent effect with a 50% lower dose of paclitaxel encapsulated in nanoparticles. ... 

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