indogen Chem.
(ˈɪndəʊdʒɛn)
[f. indo-2 + -gen 1.]
A name for the group C6H4{btr1}CO{bbr1}{bbr1}NH{btr1}C{b2} the double molecule of which (di-indogen) constitutes indigo-blue. Hence indoˈgenic a. in i. acid = indoxylic acid. inˈdogenide, a compound of indogen with another radical, as indogenide of benzoic aldehyde, or of pyruric acid. Indigo-blue is the indogenide of pseudo-isatin, or di-indogen.
| 1886 Syd. Soc. Lex., Indogen. 1892 Morley & Muir Dict. Chem. III. 7 Indoxyl forms condensation products, called indogenides, with bodies containing a CO group. |