egis-7625 egis-7625 egis-7625 is a selective and competitive 5-ht2b receptor antagonist. it is experimentally proven to be directly associated with smooth stomach muscle constriction of white rats in vivo, and variably effective in provoking a similar response in in vitro human stomach cells. in high blood concentrations, it causes mild constriction of rabbit pulmonary arteries. egis-7625clinical dataatc codenonelegal statuslegal status un: unscheduled identifiers iupac name 5-(4-benzylpiperazin-1-yl)-2-methyl-4-nitroaniline cas number755040-97-2pubchem cid9930789chemspider8106420uniivvm6ot854gchemical and physical dataformulac18h22n4o2molar mass326.400 g·mol−13d model (jsmol)interactive image smiles cc1=cc(=c(c=c1n)n2ccn(cc2)cc3=cc=cc=c3)(=o) inchi inchi=1s/c18h22n4o2/c1-14-11-18(22(23)24)17(12-16(14)19)21-9-7-20(8-10-21)13-15-5-3-2-4-6-15/h2-6,11-12h,7-10,13,19h2,1h3key:zefxwomfcprxjw-uhfffaoysa-n