gadoxetic acid gadoxetic acid gadoxetic acid is a gadolinium-based mri contrast agent. its salt, gadoxetate disodium, is marketed as primovist in europe and eovist in the united states by bayer healthcare pharmaceuticals. gadoxetic acidclinical datatrade nameseovistother namesgadoxetate disodium (usan us)ahfs/drugs.cominternational drug namesatc codev08ca10 (who) legal statuslegal status us: ℞-only eu: rx-only identifiers iupac name 2--3-(4-ethoxyphenyl)propyl]-ethyl]amino]acetate; gadolinium(+3) cation cas number135326-11-3 ypubchem cid131704314drugbankdb08884 ychemspider189907unii3qja87n40skeggd08008 yd04288chemblchembl1201768 ncomptox dashboard (epa)dtxsid90928961 chemical and physical dataformulac23h30gdn3o11molar mass681.75 g·mol−13d model (jsmol)interactive image smiles ccoc1ccc(cc1)c(cn(ccn(cc(=o)o)cc(=o))cc(=o))n(cc(=o)o)cc(=o). inchi inchi=1s/c23h33n3o11.gd/c1-2-37-18-5-3-16(4-6-18)9-17(26(14-22(33)34)15-23(35)36)10-24(11-19(27)28)7-8-25(12-20(29)30)13-21(31)32;/h3-6,17h,2,7-15h2,1h3,(h,27,28)(h,29,30)(h,31,32)(h,33,34)(h,35,36);/q;+3/p-3/t17-;/m0./s1key:pczhwpsnpwaqnf-lmovpxpdsa-k ny (what is this?) (verify) medical uses it is used to increase the t1 signal intensity while imaging the liver lesions such as benign cysts, haemangioma, and liver cancer. it is excreted into bile by active secretion. pharmacokinetics in those with end-stage renal failure, the clearance rate is only 17% with terminal half-life of 12 times longer than the those with normal renal function.