indoxyl Chem.
(ɪnˈdɒksɪl)
[f. indo-2 + oxyl.]
A brownish oil, C8H7NO, isomeric with oxindole, formed, with evolution of carbonic acid gas, when indoxylic acid is heated above its melting point; it is converted by oxidation into indigo-blue.
Hence indoˈxylic a., in i. acid, C9H7NO3, a white crystalline precipitate, slightly soluble in water, and converted by air or oxidizing agents into indigo-blue: its salts are inˈdoxylates.
| 1886 Syd. Soc. Lex., Indoxyl. 1896 Allbutt's Syst. Med. I. 899 Albuminous [urine] and containing indoxyl and casts. 1897 Ibid. IV. 287 The most important of these are the indoxyl and skatoxyl sulphates of potash. |