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4-(3-(4-((4-Nitrophenyl)azo)phenyloxy)propyl)aminobenzene sulfonic acid (C3-ABSA) was synthesized by the reaction of 3-bromide-l-(4-((4-nitrophenyl)azo)phenyloxy)propane (B3) with sodiump-aminobenzene sulfonic acid (ABSA)and acidification with hydrochlori