Comparison of QSAR predictions with fish toxicity screening data for 110 phenols was written by Lipnick, Robert L.;Bickings, Charlene K.;Johnson, David E.;Eastmond, David A.. And the article was included in ASTM Special Technical Publication in 1985.Safety of 4-Bromo-2-chloro-6-nitrophenol This article mentions the following:
A comparison was made between the predicted 96-h guppy median lethal concentration of 110 phenols based upon quant. structure-activity relationship (QSAR) equations of J. Saarikoski and M. Viluksela (1982) and the data from 936 toxicity screening tests for these chems. Test data on up to 8 species of freshwater fishes were available per compound Overall, the exptl. toxicity data on these chem. were consistent with the QSAR predictions. The 110 phenols occupy a considerably larger range of spanned substituent space than the QSAR training set. One compound, 4-aminophenol [123-30-8] exhibited lethality at test concentrations of 35 times below that predicted. The increased fish toxicity of this compound is explained in terms of a proelectrophilic mol. mechanism, in which the parent compound is metabolically oxidized to a para quinoid structure. The resulting electrophilic metabolite is susceptible to attack by nucleophilic moieties present in biol. macromols. leading to covalent bond formation and inhibition of biochem. processes. In the experiment, the researchers used many compounds, for example, 4-Bromo-2-chloro-6-nitrophenol (cas: 58349-01-2Safety of 4-Bromo-2-chloro-6-nitrophenol).
4-Bromo-2-chloro-6-nitrophenol (cas: 58349-01-2) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.Safety of 4-Bromo-2-chloro-6-nitrophenol
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary