indican

A potassium salt, C8H6NO4SK, found in urine and formed by the conversion of tryptophan to indole by intestinal bacteria.

A glucoside, C14H17NO6, found in the indigo plant and used as a source for indigo dye.

The alkali salt of indoxyl-sulphuric acid, C8H6NSO4H. It occurs in urine. See the following phrase.

The natural glucoside (C26H31NO17) by the decomposition of which indigo blue is produced from the various species of indigo-producing plants.

A glucoside (C14H17NO6) obtained from woad (indigo plant, Isatis Tinctoria) and other plants (see indigo), as a yellow or light brown sirup. When purified it is obtained as spear-shaped crystals. It has a nauseous bitter taste. By the action of acids, enzymes, etc., it breaks down into sugar and indigo. It is the source of natural indigo. Chemically it is the 3-glucoside of indole, H-indol-3-yl-β-D-glucopyranoside.