macrocin macrocin macrocin is a macrolide antibiotic. biosynthetically, it is produced from demethylmacrocin by demethylmacrocin o-methyltransferase and is converted to tylosin, an antibiotic used in veterinary medicine, by macrocin o-methyltransferase. macrocin names iupac name 2-oxy]-4-dimethylamino-3-hydroxy-6-methyl-2-tetrahydropyranyl]oxy]-15-oxymethyl]-16-ethyl-4-hydroxy-5,9,13-trimethyl-2,10-dioxo-1-oxacyclohexadeca-11,13-dien-7-yl]acetaldehyde other names tylosin c identifiers cas number 11049-15-3 y 3d model (jsmol) interactive image chebi chebi:17371 n chemspider 4444064 n pubchem cid 6440817 inchi inchi=1s/c45h75no17/c1-12-32-29(21-57-44-41(56-11)38(53)36(51)25(5)59-44)17-22(2)13-14-30(48)23(3)18-28(15-16-47)39(24(4)31(49)19-33(50)61-32)63-43-37(52)35(46(9)10)40(26(6)60-43)62-34-20-45(8,55)42(54)27(7)58-34/h13-14,16-17,23-29,31-32,34-44,49,51-55h,12,15,18-21h2,1-11h3/b14-13+,22-17+/t23-,24+,25-,26-,27+,28+,29-,31-,32-,34+,35-,36-,37-,38-,39-,40-,41-,42+,43+,44-,45-/m1/s1 nkey: ufuyrgnjtfaodm-hqcavaadsa-n ninchi=1/c45h75no17/c1-12-32-29(21-57-44-41(56-11)38(53)36(51)25(5)59-44)17-22(2)13-14-30(48)23(3)18-28(15-16-47)39(24(4)31(49)19-33(50)61-32)63-43-37(52)35(46(9)10)40(26(6)60-43)62-34-20-45(8,55)42(54)27(7)58-34/h13-14,16-17,23-29,31-32,34-44,49,51-55h,12,15,18-21h2,1-11h3/b14-13+,22-17+/t23-,24+,25-,26-,27+,28+,29-,31-,32-,34+,35-,36-,37-,38-,39-,40-,41-,42+,43+,44-,45-/m1/s1key: ufuyrgnjtfaodm-hqcavaadbq smiles c((o2()o(c)(o4()o(c)(o)(o)(c)c4)(n(c)c)2o)(cc=o)c1c)(o)cc(o(cc)(co3(oc)(o)(o)(c)o3)/c=c(c)/c=c/c1=o)=o properties chemical formula c45h75no17 molar mass 902.07 g/mol except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). n verify (what is yn ?) infobox references