3-AMINO-4-(ISOPROPYLSULFONYL)THIOPHENE-2-CARBOXYLIC ACID;3-amino-4-(isopropylsulphonyl)thiophene-2-carboxylic acid;3-Amino-4-(ispropylsulfonyl)thiophene-2-carboxylic acid;3-Amino-2-thiophene
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