- a glucoside, C14H17NO6, that occurs in plants yielding indigo and from which indigo is obtained.
- Biochemistry. indoxyl potassium sulfate, C8H6NO4SK, a component of urine.
- a compound secreted in the urine, usually in the form of its potassium salt; indoxylsulphuric acid. Formula: C 8 H 6 NOSO 2 OH
- A potassium salt found in sweat and urine and formed by the conversion of tryptophan to indole by intestinal bacteria.