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uroxanthin 尿黄质 尿黄质 Indican \In"di*can\, n. [See {Indigo}.]
[1913 Webster] 1. (Chem.) 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-[beta]-D-glucopyranoside. [1913 Webster PJC] 2. (Physiol. Chem.) An indigo-forming substance, found in urine, and other animal fluids, and convertible into red and blue indigo (urrhodin and uroglaucin). Chemically, it is indoxyl sulphate of potash, {C8H6NSO4K}, and is derived from the indol formed in the alimentary canal. Called also {uroxanthin}. [1913 Webster] Uroxanthin \U`ro*xan"thin\, n. [1st uro- xanthin.] (Physiol. Chem.) Same as {Indican}. [1913 Webster]
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