1-Azaindene 1-Benzazole 1-Benzo(b)pyrrole 120-72-9 1H-Indole 2,3-Benzopyrole 2,3-Benzopyrrole AI3-01540 Benzopyrrole CCRIS 4421 Caswell No. 498B EINECS 204-420-7 EPA Pesticide Chemical Code 025000 FEMA No. 2593 HSDB 599 INDOLE Indol Indol [German] Indole (natural) Ketole NSC 1964