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Medical Term:

ninhydrin

Pronunciation: nin-hi'drin

Definition: A substance that Reacts with free amino acids to yield CO2, NH3, and an aldehyde, the NH3 further yielding a colored product (diketohydrindylidene-diketohydrindamine, a bi-indanedione derivative also called Ruhemann purple).

See Also: ninhydrin reaction

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