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Skeletal formula
Ball-and-stick model
IUPAC name
480-93-3 YesY
3D model (Jmol) Interactive image
ChEBI CHEBI:17840 YesY
ChemSpider 45861 YesY
ECHA InfoCard 100.216.308
KEGG C05658 YesY
PubChem 50591
Molar mass 133.14728
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

In chemistry, indoxyl is a nitrogenous substance with the chemical formula: C8H7NO.[1][2] Indoxyl is isomeric with oxindol and is obtained as an oily liquid.

Indoxyl is obtained from indican, which is a glycoside. The hydrolysis of indican yields β-D-glucose and indoxyl.

Indigo dye is a product of the reaction of indoxyl by a mild oxidizing agent such as atmospheric oxygen.

Indoxyl can be found in urine and is titrated with Obermayer's reagent. Obermayer's reagent is a dilute solution FeCl3 in hydrochloric acid.[3]


  1. ^ Katritzky, A. R.; Pozharskii, A. F. (2000). Handbook of Heterocyclic Chemistry (2nd ed.). Academic Press. ISBN 0080429882. 
  2. ^ Clayden, J.; Greeves, N.; Warren, S.; Wothers, P. (2001). Organic Chemistry. Oxford, Oxfordshire: Oxford University Press. ISBN 0-19-850346-6. 
  3. ^ Lide, David (1998). CRC - Handbook of Chemistry and Physics. CRC press LLC. pp. Section 8 page 3. ISBN 0-8493-0479-2.