iodobenzamide iodobenzamide iodobenzamide (ibzm or iolopride) is a pharmaceutical drug used for diagnostic purposes. it is a dopamine antagonist and it can be used by nuclear medicine physicians as a radioactive tracer for spect where the radioactive isotope is iodine-123 or iodine-125. the main purpose of a brain study with ibzm is the differentiation of parkinson's disease from other neurodegenerative diseases such as lewy body dementia and multiple system atrophy. iodobenzamide names preferred iupac name n--2-hydroxy-3-iodo-6-methoxybenzamide other names ibzm; iolopride identifiers cas number 84226-06-2 y113716-48-6 (123i) y113452-80-5 (125i) y 3d model (jsmol) interactive image chemspider 97107 pubchem cid 107995 unii 9j5d4zn1jk y5e76soq99k (123i) y0709qg1noy (125i) y inchi inchi=1s/c15h21in2o3/c1-3-18-8-4-5-10(18)9-17-15(20)13-12(21-2)7-6-11(16)14(13)19/h6-7,10,19h,3-5,8-9h2,1-2h3,(h,17,20)/t10-/m0/s1key: canpfcfjurgkax-jtqlqieisa-ninchi=1/c15h21in2o3/c1-3-18-8-4-5-10(18)9-17-15(20)13-12(21-2)7-6-11(16)14(13)19/h6-7,10,19h,3-5,8-9h2,1-2h3,(h,17,20)/t10-/m0/s1key: canpfcfjurgkax-jtqlqieibe smiles ic1ccc(oc)c(c1o)c(=o)nc2n(cc)ccc2 properties chemical formula c15h21in2o3 molar mass 404.248 g·mol−1 pharmacology atc code v09ab02 (who) except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references