3-11-00-00100 (Beilstein Handbook Reference) 53271-19-5 AI3-03743 BRN 2882865 Benzenesulfonic acid, 4-bromo-, 4-nitrophenyl ester Benzenesulfonic acid, p-bromo-, p-nitrophenyl ester p-Nitrophenyl p-bromobenzenesulfonate