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ChEBI: 9-mercaptodethiobiotin is a member of the class of imidazolidinones that is dethiobiotin carrying a mercapto substituent at position 9. An intermediate in the biosynthesis of biotin. It has a role as an Escherichia coli metabolite. It is a monocarboxylic acid, a member of ureas, an imidazolidinone and a thiol. It is functionally related to a (4R,5S)-dethiobiotin.