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Also known as 2,3-benzopyrrole.
C6H4-(CHNH)CH A decomposition product of tryptophan formed in the intestine during putrefaction and by certain cultures of bacteria.
(organic chemistry)
Carcinogenic, white to yellowish scales with unpleasant aroma; soluble in alcohol, ether, hot water, and fixed oils; melt at 52°C; used as a chemical reagent and in perfumery and medicine.



(2, 3-benzopyrrole), colorless crystals with an unpleasant odor. Melting point, 52°C; boiling point, 254°C. It is soluble in hot water and organic solvents. Indole is present in coal tar, from which it is extracted as salts of alkali metals, as well as in certain essential oils (for example, oil of jasmine). Along with skatole (3-methyl-indole), it is found in the intestines of human beings and mammals.

Many indole derivatives, for example, 3-indoleacetic acid (heteroauxin A, a growth substance), serotonin, and reserpine, are biologically active. Indole is a raw material for synthesizing heteroauxin and tryptophane, and is used in the perfumery industry to improve and strengthen the scents of flower essences.

References in periodicals archive ?
These plants are well-known rich source of unique heterocyclic alkaloids with indole skeletons [2].
coli ATCC 11303 was cultured in the inexpensive medium and bacterial cells induced for TSase activity during growth by addition of indole to the culture medium harvested from growth medium were transferred to production medium as biocatalyst of L-Trp production from indole and L-Ser.
Photoproduction of indole 3-acetic acid by Rhodobacter sphaeroides from indole and glycine.
Indole acetic acid is the main auxin in plants, controlling many important physiological processes including cell enlargement and division, tissue differentiation, and responses to light and gravity [9].
Leuconostoc, Bacillus, Atopostipes, Bacteroides, and Pseudomonas metabolize tryptophan to indole-3-lactate, and then to indole and skatole in animal feces (Chen and Russell, 1988; Starrenburg and Hugenholtz, 1991; Van der Meulen et al.
Indole acetic acid production by the indigenous isolates of Azotobacter and fluorescent pseudomonas in the presence and absence of tryptophan.
Esta afirmacion de la constitucion dogmatica Lumen gentium tiene relacion con la secularidad cristiana, que, si bien no es exclusiva de los cristianos laicos, en ellos se intensifica hasta constituir su propia naturaleza o indole.
These brominated indole precursors are stored as choline ester salts in the hypobranchial glands of Muricidae (Baker & Sutherland 1968, Benkendorff 2013).
However, this serotype could not produce indole, whereas SFxv could.
Nuevas miradas y lecturas Ana Peluffo reune doce ensayos de diversa indole con la intencion de flexibilizar los enfoques dicotomicos que por mucho tiempo caracterizaron el estudio de este periodo.
Two compounds in the breath - 2-methyl, pentadecane and indole - increased following the stress exercise.
Ya que, la exuberancia de la fauna y flora de Caldas no son mas evidentes debido a la escasez de investigaciones de dicha indole.