actinorhodin actinorhodin actinorhodin is a benzoisochromanequinone dimer polyketide antibiotic produced by streptomyces coelicolor. the gene cluster responsible for actinorhodin production contains the biosynthetic enzymes and genes responsible for export of the antibiotic. the antibiotic also has the effect of being a ph indicator due to its ph-dependent color change. actinorhodin names preferred iupac name 2,2′-pyran]-3,3′-diyl]diacetic acid identifiers cas number 1397-77-9 y 3d model (jsmol) interactive image beilstein reference 76401 chebi chebi:2448 n chemspider 16735642 y kegg c06691 pubchem cid 5280985 unii g4hh387t6z y comptox dashboard (epa) dtxsid20930557 inchi inchi=1s/c32h26o14/c1-9-21-15(3-11(45-9)5-19(35)36)29(41)23-17(33)7-13(27(39)25(23)31(21)43)14-8-18(34)24-26(28(14)40)32(44)22-10(2)46-12(6-20(37)38)4-16(22)30(24)42/h7-12,33-34,39-40h,3-6h2,1-2h3,(h,35,36)(h,37,38)/t9-,10-,11+,12+/m1/s1 ykey: vtikdexoejdmjp-wyuuthirsa-n yinchi=1/c32h26o14/c1-9-21-15(3-11(45-9)5-19(35)36)29(41)23-17(33)7-13(27(39)25(23)31(21)43)14-8-18(34)24-26(28(14)40)32(44)22-10(2)46-12(6-20(37)38)4-16(22)30(24)42/h7-12,33-34,39-40h,3-6h2,1-2h3,(h,35,36)(h,37,38)/t9-,10-,11+,12+/m1/s1key: vtikdexoejdmjp-wyuuthirbl smiles oc(=o)c5cc=6c(=o)c4c(o)cc(c3cc(o)c2c(=o)c=1c(cc(o)=o)o(c)c=1c(=o)c2c3o)c(o)c4c(=o)c=6(c)o5 properties chemical formula c32h26o14 molar mass 634.546 g·mol−1 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