Ethyl 3-((4-Chloro-2-nitrophenyl)(phenyl)amino)-3-oxopropanoate is an intermediate used in the synthesis of 7-Chloro-5-phenyl-1,5-dihydro-3H-1,5-benzodiazepine-2,4-dione (C424378), which is an impurity of Clobazam (C582500), which is a benzodiazepine, psychotherapeutic agent. Clobazam (CLB) has proven efficacy against multiple seizure types and is an anxiolytic, anticonvulsant and controlled substance (depressant).