ninhydrin

 
Pronunciation: /nɪnˈhʌɪdrɪn/

noun

[mass noun] Chemistry
  • a synthetic crystalline compound which forms deeply coloured products with primary amines and is used in analytical tests for amino acids.
    • A ketone derivative of indene; chemical formula: C9H6O4

Origin:

early 20th century: from nin- (of unknown origin) + hydro- + -in1