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A synthetic crystalline compound which forms deeply colored products with primary amines and is used in analytical tests for amino acids.
- ‘The clone expressing the g lactamase forms some amino acid product - this is readily detected by staining with ninhydrin.’
- ‘After the chromatography was complete, dried plates were sprayed with a solution of 2% ninhydrin in acetone (w/v), followed by heating.’
- ‘The photochemistry of ninhydrin in benzene and water was studied by laser flash photolysis and electron paramagnetic resonance.’
- ‘The proline content was determined by reacting with ninhydrin in an acid medium.’
- ‘The amino acids were separated in this HPLC-system by ion exchange and detected after post-column derivatization with ninhydrin at 570 nm.’
Early 20th century: from nin- (of unknown origin) + hydro- + -in.
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