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Ethyl 2-amino-1,3-benzothiazole-6-carboxylate 2-Aminobenzothiazole-6-carboxylic acid BENZOTHIAZOLE-2-CARBOXYLIC ACID 2-BROMO-6-BENZOTHIAZOLECARBOXYLIC ACID ETHYL 1,3-BENZOTHIAZOLE-2-CARBOXYLATE Benzothiazole-5-carboxylic acid 2-BROMO-6-ETHOXYCARBONYLBENZOTHIAZOLE 6-Benzothiazolecarboxylicacid,ethylester(6CI,8CI,9CI)