2-carbomethoxy-8-(3-fluoropropyl)-3-(4-iodophenyl)tropane [ (18F)FP-CIT,(O-methyl-11C)beta-CIT-FP,123I-FP-CIT,FP-CIT,FPCIT,I(123)-N-fluoropropyl-2-beta-carbomethoxy-3-(4-iodophenyl)nortropane,I(123)-N-omega-fluoropropyl-2-beta-carbomethoxy-3-beta(4-iodophenyl)nortropane,N-omega-fluoropropyl-2beta-carbomethoxy-3beta-(4-iodophenyl)tropane,beta-CIT-FP,fluoropropylcarbomethoxyiodophenylnortropane ] used in PET and SPECT imaging of dopamine transporters; structure in first source