A white crystalline compound, C8H7N, obtained from coal tar or various plants and produced by the bacterial decomposition of tryptophan in the intestine. It is used in perfumery and as a reagent.

• 吲哚一种白色结晶化合物，C8H7N，可以从煤焦油中提炼，也可以从许多植物中提炼出来，细菌分解肠道中的色氨酸，也可产生此种化合物。它主要被用于制造香水和化学试剂