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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-01-04 22:31:42 UTC
Update Date2022-09-22 18:34:33 UTC
HMDB IDHMDB0240743
Secondary Accession NumbersNone
Metabolite Identification
Common NameIndirubin
DescriptionIndirubin or indigo red is an organic compound with a distinctive deep red/orange color. It is an oxindole dimer consisting of two fused oxindole rings. Indoles are compounds which consist of a pyrrole ring fused to benzene to form 2,3-benzopyrrole. Indirubin is found in both plants and animals and has been detected in human urine and human tissues (PMID: 11076521 ; PMID: 8667928 ). The precursor to indirubin is indican, a colorless, water-soluble derivative of the amino acid tryptophan which is converted to indole via microbial metabolism. Indican readily hydrolyzes to release β-D-glucose and indoxyl. Oxidation of indoxyl by CYP450 enzymes in the liver or kidneys can convert indoxyl to indirubin (PMID: 11076521 ). Likewise, exposure to air can convert indoxyl to indirubin. In addition to the mammalian production of minute amounts of indirubin, this chemical can also be recovered in far larger amounts from plants. Historically, indirubin has been extracted from the leaves of certain plants of the Indigofera genus, in particular Indigofera tinctoria. Indigofera plants were commonly grown and used throughout the world for the production of dyes. Indirubin is a chemical constituent of indigo naturalis (also known as qing dai), which has been used for hundreds of years in traditional Chinese medicine. It is produced by collecting the waste products from the bacterial degradation of specific forms of vegetation. Indirubin has shown anti-inflammatory and anti-angiogenesis properties in vitro (PMID: 21207415 ). It has also been studied for potential use in the treatment of ulcerative colitis (PMID: 23674882 ).
Structure
Thumb
SynonymsNot Available
Chemical FormulaC16H10N2O2
Average Molecular Weight262.268
Monoisotopic Molecular Weight262.07422757
IUPAC Name3-[(2E)-3-oxo-2,3-dihydro-1H-indol-2-ylidene]-2,3-dihydro-1H-indol-2-one
Traditional Name3-[(2E)-3-oxo-1H-indol-2-ylidene]-1H-indol-2-one
CAS Registry NumberNot Available
SMILES
O=C1NC2=CC=CC=C2\C1=C1/NC2=CC=CC=C2C1=O
InChI Identifier
InChI=1S/C16H10N2O2/c19-15-10-6-2-4-8-12(10)17-14(15)13-9-5-1-3-7-11(9)18-16(13)20/h1-8,17H,(H,18,20)/b14-13+
InChI KeyCRDNMYFJWFXOCH-BUHFOSPRSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as indolines. Indolines are compounds containing an indole moiety, which consists of pyrrolidine ring fused to benzene to form 2,3-dihydroindole.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassIndoles and derivatives
Sub ClassIndolines
Direct ParentIndolines
Alternative Parents
Substituents
  • Dihydroindole
  • Aryl ketone
  • Benzenoid
  • Vinylogous amide
  • Amino acid or derivatives
  • Carboxamide group
  • Ketone
  • Lactam
  • Secondary carboxylic acid amide
  • Carboxylic acid derivative
  • Enamine
  • Secondary amine
  • Azacycle
  • Hydrocarbon derivative
  • Organic oxide
  • Organopnictogen compound
  • Amine
  • Aldehyde
  • Organic oxygen compound
  • Carbonyl group
  • Organonitrogen compound
  • Organooxygen compound
  • Organic nitrogen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External DescriptorsNot Available
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateNot Available
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
Predicted Chromatographic Properties
Spectra
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Blood
  • Urine
Tissue LocationsNot Available
Pathways
Normal Concentrations
Not Available
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedCancer patients undergoing total body irradiation details
UrineDetected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedCancer patients undergoing total body irradiation details
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDDB12379
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDC00026982
Chemspider ID4514277
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkIndirubin
METLIN IDNot Available
PubChem Compound5359405
PDB IDNot Available
ChEBI IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Gillam EM, Notley LM, Cai H, De Voss JJ, Guengerich FP: Oxidation of indole by cytochrome P450 enzymes. Biochemistry. 2000 Nov 14;39(45):13817-24. doi: 10.1021/bi001229u. [PubMed:11076521 ]
  2. Arnold WN: King George III's urine and indigo blue. Lancet. 1996 Jun 29;347(9018):1811-3. doi: 10.1016/s0140-6736(96)91622-0. [PubMed:8667928 ]
  3. Zhang X, Song Y, Wu Y, Dong Y, Lai L, Zhang J, Lu B, Dai F, He L, Liu M, Yi Z: Indirubin inhibits tumor growth by antitumor angiogenesis via blocking VEGFR2-mediated JAK/STAT3 signaling in endothelial cell. Int J Cancer. 2011 Nov 15;129(10):2502-11. doi: 10.1002/ijc.25909. Epub 2011 Apr 7. [PubMed:21207415 ]
  4. Suzuki H, Kaneko T, Mizokami Y, Narasaka T, Endo S, Matsui H, Yanaka A, Hirayama A, Hyodo I: Therapeutic efficacy of the Qing Dai in patients with intractable ulcerative colitis. World J Gastroenterol. 2013 May 7;19(17):2718-22. doi: 10.3748/wjg.v19.i17.2718. [PubMed:23674882 ]