hitachimycin hitachimycin hitachimycin, also known as stubomycin, is a cyclic polypeptide produced by streptomyces that acts as an antibiotic. it exhibits cytotoxic activity against mammalian cells, gram-positive bacteria, yeast, and fungi, as well as hemolytic activity; this is mediated by changes at the cell membrane and subsequent lysis. owing to its cytotoxic activity against mammalian cells and tumors, it was first proposed as an antitumor antibiotic. hitachimycinclinical dataatc codenoneidentifiers iupac name (2z,4e,6e,12e)-16,20-dihydroxy-21-methoxy-3-methyl-10-phenyl-9-azabicyclodocosa-2,4,6,12,19-pentaene-8,18-dione cas number77642-19-4 ypubchem cid5384563chemspider10306390 nuniildw8tt2m3fcomptox dashboard (epa)dtxsid60894881 chemical and physical dataformulac29h35no5molar mass477.601 g·mol−13d model (jsmol)interactive image smiles o1cc\c=c\c(nc(=o)\c=c\c=c\c(\c)=c/2c(oc)c(\o)=c2\c(=o)c1)c3ccccc3 inchi inchi=1s/c29h35no5/c1-20-11-9-10-16-27(33)30-24(21-12-5-3-6-13-21)15-8-4-7-14-23(31)19-25(32)28-22(17-20)18-26(35-2)29(28)34/h3-6,8-13,16-17,22-24,26,31,34h,7,14-15,18-19h2,1-2h3,(h,30,33)/b8-4+,11-9+,16-10+,20-17-/t22-,23-,24-,26-/m0/s1 nkey:plqkhnpzprtisl-qsqnxqfysa-n n ny (what is this?) (verify) as of 2007, it has not been used in a clinical setting.