1-Azaindene 1-Benzazole 120-72-9 1H-Indole 1H-Indole (9CI) 2,3-Benzopyrole 2,3-Benzopyrrole Benzo[b]pyrrole CCRIS 4421 Caswell No. 498B EPA Pesticide Chemical Code 025000 FEMA No. 2593 HSDB 599 IND Indole Indole (8CI) Ketole