surotomycin surotomycin surotomycin was an investigational oral antibiotic. this macrolide antibiotic was under investigation by merck & co (who acquired cubist pharmaceuticals) for the treatment of life-threatening diarrhea, commonly caused by the bacterium clostridium difficile. after reaching phase iii in clinical trials, its production was discontinued in 2017 due to its non-superiority to current therapies. surotomycin names iupac name (3s)-3--3-propanamido]propanamido]propanoic acid identifiers cas number 1233389-51-9 n 3d model (jsmol) interactive image chembl chembl2375161 chemspider 28527704 kegg d10380 pubchem cid 46700778 unii on0n776n05 comptox dashboard (epa) dtxsid60153980 inchi inchi=1s/c77h101n17o26/c1-6-7-8-14-41-20-22-42(23-21-41)37(2)25-58(98)86-49(27-43-33-81-47-18-12-10-15-44(43)47)71(113)89-50(29-57(80)97)72(114)91-53(32-64(107)108)73(115)94-66-40(5)120-77(119)54(28-56(96)45-16-9-11-17-46(45)79)92-76(118)65(38(3)26-61(101)102)93-74(116)55(36-95)87-60(100)34-82-68(110)51(30-62(103)104)88-67(109)39(4)84-70(112)52(31-63(105)106)90-69(111)48(19-13-24-78)85-59(99)35-83-75(66)117/h9-12,15-18,20-23,25,33,38-40,48-55,65-66,81,95h,6-8,13-14,19,24,26-32,34-36,78-79h2,1-5h3,(h2,80,97)(h,82,110)(h,83,117)(h,84,112)(h,85,99)(h,86,98)(h,87,100)(h,88,109)(h,89,113)(h,90,111)(h,91,114)(h,92,118)(h,93,116)(h,94,115)(h,101,102)(h,103,104)(h,105,106)(h,107,108)/b37-25+/t38-,39-,40-,48+,49+,50-,51+,52+,53+,54+,55-,65+,66+/m1/s1key: dynmyyrppfvakr-cwxhrmtksa-ninchi=1/c77h101n17o26/c1-6-7-8-14-41-20-22-42(23-21-41)37(2)25-58(98)86-49(27-43-33-81-47-18-12-10-15-44(43)47)71(113)89-50(29-57(80)97)72(114)91-53(32-64(107)108)73(115)94-66-40(5)120-77(119)54(28-56(96)45-16-9-11-17-46(45)79)92-76(118)65(38(3)26-61(101)102)93-74(116)55(36-95)87-60(100)34-82-68(110)51(30-62(103)104)88-67(109)39(4)84-70(112)52(31-63(105)106)90-69(111)48(19-13-24-78)85-59(99)35-83-75(66)117/h9-12,15-18,20-23,25,33,38-40,48-55,65-66,81,95h,6-8,13-14,19,24,26-32,34-36,78-79h2,1-5h3,(h2,80,97)(h,82,110)(h,83,117)(h,84,112)(h,85,99)(h,86,98)(h,87,100)(h,88,109)(h,89,113)(h,90,111)(h,91,114)(h,92,118)(h,93,116)(h,94,115)(h,101,102)(h,103,104)(h,105,106)(h,107,108)/b37-25+/t38-,39-,40-,48+,49+,50-,51+,52+,53+,54+,55-,65+,66+/m1/s1key: dynmyyrppfvakr-cwxhrmtkbw smiles cccccc1ccc(cc1)/c(=c/c(=o)n(cc2cc3c2cccc3)c(=o)n(cc(=o)n)c(=o)n(cc(=o)o)c(=o)n4(oc(=o)(nc(=o)(nc(=o)(nc(=o)cnc(=o)(nc(=o)(nc(=o)(nc(=o)(nc(=o)cnc4=o)cccn)cc(=o)o)c)cc(=o)o)co)(c)cc(=o)o)cc(=o)c5ccccc5n)c)/c properties chemical formula c77h101n17o26 molar mass 1680.748 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references