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4-Carboxy-2-chlorophenylboronic acid

4-Carboxy-2-isopropylaminothiazole hydrobromide

4-Carboxy-7-chloro-2-(ethoxycarbonyl)indole-3-propanoic acid

4-Carboxybenzenesulfonyl azide

4-Carboxycinnamic acid

4-Carboxylic-isatoic anhydride

4-Carboxy-l-phenylalanine

4-Carboxymethyl-6,7-methylenedioxycoumarin

4-Carboxynaphthalene-1-boronic acid

4-Carboxyphenoxyacetic acid