A white, crystalline compound,
C8H7N, obtained from
indigo and other sources and formed as a product of
the intestinal putrefaction of proteins. It is used
in perfumery, as a reagent, etc.
Its molecules
consist of a benzene ring fused to a nitrogen-containing
five-membered ring.
Occurs in some plants and in
coal tar, and is produced in faeces by bacterial action.
