lumirubin lumirubin lumirubin is a structural isomer of bilirubin, which is formed during phototherapy used to treat neonatal jaundice. this polar isomer resulting from the blue-green lights of phototherapy has an active site to albumin, and its effects are considered less toxic than those of bilirubin. lumirubin is excreted into bile or urine. zz, ze, ee and ez are the four structural isomers of bilirubin. zz is the stable, more insoluble form. other forms are relatively soluble and are known as lumirubins. phototherapy converts the zz form into lumirubins. monoglucuronylated lumirubins are easily excreted. lumirubin (z)-isomer of lumirubin names iupac name 3-trideca-1,3,5,9-tetraen-5-yl]methyl]-5--4-methyl-1h-pyrrol-3-yl]propanoic acid identifiers cas number 110617-57-783664-21-5 3d model (jsmol) interactive image chemspider 4946083 pubchem cid 135754285 inchi inchi=1s/c33h36n4o6/c1-6-19-16(2)24(36-32(19)43)13-23-17(3)20(7-9-29(38)39)25(34-23)14-27-22(8-10-30(40)41)33(5)12-11-21-18(4)31(42)37-26(21)15-28(33)35-27/h6,11,13,15,18,34h,1,7-10,12,14h2,2-5h3,(h,36,43)(h,37,42)(h,38,39)(h,40,41)/b24-13+key: byvduqyjiipfib-zmogyajesa-n smiles cc1c2=ccc3(c(=nc(=c3ccc(=o)o)cc4=c(c(=c(n4)/c=c/5\c(=c(c(=o)n5)c=c)c)c)ccc(=o)o)c=c2nc1=o)c properties chemical formula c33h36n4o6 molar mass 584.673 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references