1,2,3,4-Tetrahydro-9-chloropyrrolo(1,2,3-ef)(1,5)benzodiazepine 28740-90-1 5-23-07-00327 (Beilstein Handbook Reference) BRN 0958547 Pyrrolo(1,2,3-ef)(1,5)benzodiazepine, 1,2,3,4-tetrahydro-9-chloro-