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What does ninhydrin mean?

Looking for the meaning or definition of the word ninhydrin? Here's what it means.

Noun
  1. (organic chemistry) The aromatic compound 2,2-dihydroxyindane-1,3-dione which is used as a reagent to detect amines
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Examples
The amino acids were separated in this HPLC-system by ion exchange and detected after post-column derivatization with ninhydrin at 570 nm.
The photochemistry of ninhydrin in benzene and water was studied by laser flash photolysis and electron paramagnetic resonance.
Measure out 225 mL of ethanol and add to ninhydrin.
Total free amino acids in the leaf extracts and in the phloem exudate were analysed with the ninhydrin reagent.
Fixed-dose combination products containing also ethambutol would require staining with ninhydrin solution as this drug cannot be detected with UV light of any wavelenght whatsoever.
In general the frequency of calibration runs depends on the stability of the ninhydrin reagent and the analytical system.

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