ritipenem ritipenem ritipenem is a penem class antimicrobial agent. ritipenem is manufactured by tanabe seiyaku in the ritipenem acoxil prodrug form, which can be taken orally . it is not fda approved in the united states as of 2008. ritipenemidentifierscas number84845-57-8 ypubchem cid65633chemspider59074uniid4sl77931lchemblchembl70088comptox dashboard (epa)dtxsid60868840 chemical and physical dataformulac10h12n2o6smolar mass288.27 g·mol−13d model (jsmol)interactive image smiles c(o)12sc(=c(n2c1=o)c(=o)o)coc(=o)n inchi inchi=1s/c10h12n2o6s/c1-3(13)5-7(14)12-6(9(15)16)4(19-8(5)12)2-18-10(11)17/h3,5,8,13h,2h2,1h3,(h2,11,17)(h,15,16)/t3-,5+,8-/m1/s1key:ikqnrqouozjhtr-uwbrjapdsa-n