rosaramicin rosaramicin rosaramicin (rosamicin) is an antibacterial substance that is chemically a lipid-soluble basic macrolide similar to erythromycin but with a better activity against gram-negative bacteria. rosaramicin names iupac name acetaldehyde systematic iupac name oxy}-3-ethyl-7-hydroxy-2,8,12,16-tetramethyl-5,13-dioxo-4,17-dioxabicycloheptadec-14-en-10-yl]acetaldehyde other names rosamicin; juvenimicin a3 identifiers cas number 35834-26-5 n 3d model (jsmol) interactive image chebi chebi:87084 y chembl chembl8965 chemspider 5020508 echa infocard 100.047.933 ec number 252-742-1 kegg d05757 pubchem cid 6537204 unii e907bnq7sh comptox dashboard (epa) dtxsid4046361 inchi inchi=1s/c31h51no9/c1-9-25-20(5)29-31(6,41-29)12-10-23(34)17(2)14-21(11-13-33)28(19(4)24(35)16-26(36)39-25)40-30-27(37)22(32(7)8)15-18(3)38-30/h10,12-13,17-22,24-25,27-30,35,37h,9,11,14-16h2,1-8h3/b12-10+/t17-,18-,19+,20-,21+,22+,24-,25-,27-,28-,29+,30+,31+/m1/s1key: iupcwclvecyzrv-jzmzinansa-ninchi=1/c31h51no9/c1-9-25-20(5)29-31(6,41-29)12-10-23(34)17(2)14-21(11-13-33)28(19(4)24(35)16-26(36)39-25)40-30-27(37)22(32(7)8)15-18(3)38-30/h10,12-13,17-22,24-25,27-30,35,37h,9,11,14-16h2,1-8h3/b12-10+/t17-,18-,19+,20-,21+,22+,24-,25-,27-,28-,29+,30+,31+/m1/s1key: iupcwclvecyzrv-jzmzinanbr smiles o=cc2(o1o(c(n(c)c)1o)c)(c)(o)cc(=o)o(cc)(c)3o3(\c=c\c(=o)(c)c2)c properties chemical formula c31h51no9 molar mass 581.747 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references experiments in dogs have shown that it is more concentrated in the prostate than erythromycin is, and thus may be better for treating infections of that organ.