CAS 18877-34-4 appears in our catalog under these names: 2,3-Dihydro-1h-pyrrolo[2,1-c][1,4]benzodiazepine-5,11(10h,11ah)-dione, 95%, PBD-5,11-dione, >95% (HPLC), 2,3-Dihydro-1H-pyrrolo(2,1-c)(1,4)benzodiazepine-5,11(10H,11aH)-dione. Offered by: Combi-blocks, TRC, Biosynth. Available pack sizes: 250mg, 1g, 100mg, 500mg.