1-(4-Aminophenyl)-3-n-propyl-3-azabicyclo[3.1.0]hexane-2, 4-dione, compound1(CGP29953), is an analog of the aromatase inhibitor aminoglutethimide (AG); AG has applications in cancer treatment. We have studied the1H NMR spectra of racemic compound1(in CDC13, ambient temperatures, 300-MHz) with the added achiral LSR, tris(6, 6, 7, 7, 8, 8, 8-heptafluoro-2, 2-dimethyl-3, 5-octanedionato) europium (III), compound2, and the chiral LSR, tris[3-(heptafluoropropylhydroxymethylene)-(+) - camphorato]europium (III), compound3. Use of compound3produced substantial enantiomeric shift differences for several nuclei of compound1.1H-1H COSY spectra were used to determine the relative sense of magnetic nonequivalence for selected nuclei of compound1with added compound3. Relative lanthanide induced shift (LIS) magnitudes for compound1. with added LSR are discussed.