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Identification Taxonomy Ontology Physical properties Spectra Biological properties Concentrations Links References enzymes (2) Show 2 proteins XML

Record Information

Version

5.0

Status

Detected and Quantified

Creation Date

2005-11-16 15:48:42 UTC

Update Date

2023-02-21 17:14:51 UTC

HMDB ID

HMDB0000466

Secondary Accession Numbers

HMDB00466

Metabolite Identification

Common Name

3-Methylindole

Description

3-Methylindole, or skatole, belongs to the indole family and has a methyl substituent in position 3 of the indole ring. It occurs naturally in feces, beets, and coal tar, and has a strong fecal odor. Its name is derived from skato, the Greek word for dung. It exists as a white crystalline or fine powder solid, and it browns upon aging. 3-Methylindole is produced from tryptophan in the mammalian digestive tract where tryptophan is converted to indoleacetic acid, which decarboxylates to give the methylindole. These reactions are largely driven by the microbiota in the digestive tract. 3-Methylindole is soluble in alcohol and benzene and it gives violet color in potassium ferrocyanide (K4Fe(CN)6.3H2O) mixed with sulfuric acid (H2SO4). Skatole has a double ring system which displays aromaticity that comes from the lone pair electrons on the nitrogen. It is continuous (all atoms in the ring are sp2 hybridized), planar, and follows the 4n+2 rule because it has 10 pi electrons. In a 1994 report released by five top cigarette companies, skatole was listed as one of the 599 additives to cigarettes. This is because in low concentrations skatole has a flowery smell and is found in several flowers and essential oils, including those of orange blossoms, jasmine, and Ziziphus mauritiana. As a result, skatole/3-methylindole is used as a fragrance and fixative in many perfumes and as a general aroma compound for other applications. 3-Methylindole has been found to be a bacterial metabolite of members of the Clostridium (PMID: 18223109 ) and Lactobacillus (PMID: 16345702 ) families. Skatole functions as an insect attractant and is one of many compounds that are attractive to males of various species of orchid bees, which apparently gather the chemical to synthesize pheromones; it is commonly used as bait for these bees for study (PMID: 12647866 ). It is also known for being an attractant for the Tasmanian grass grub beetle (Aphodius tasmaniae). Skatole has also been shown to be an attractant to gravid mosquitoes in both field and laboratory conditions (PMID: 24242053 ).

Structure

MOL 3D MOL SDF 3D SDF PDB 3D PDB SMILES InChI

View in JSmol View NMR Assignments View Stereo Labels

Synonyms

Value	Source
3-Methyl-4,5-benzopyrrole	ChEBI
beta-Methylindole	ChEBI
Skatol	ChEBI
b-Methylindole	Generator
Β-methylindole	Generator
3-Methyl-1H-indole	HMDB
3-MI	HMDB
Scatole	HMDB
Skatole	HMDB
3 Methylindole	HMDB
3-Methylindole	ChEBI

Chemical Formula

C₉H₉N

Average Molecular Weight

131.1745

Monoisotopic Molecular Weight

131.073499293

IUPAC Name

3-methyl-1H-indole

Traditional Name

scatole

CAS Registry Number

83-34-1

SMILES

CC1=CNC2=CC=CC=C12

InChI Identifier

InChI=1S/C9H9N/c1-7-6-10-9-5-3-2-4-8(7)9/h2-6,10H,1H3

InChI Key

ZFRKQXVRDFCRJG-UHFFFAOYSA-N

Chemical Taxonomy

Description

Belongs to the class of organic compounds known as 3-methylindoles. These are aromatic heterocyclic compounds that contain an indole moiety substituted at the 3-position with a methyl group.

Kingdom

Organic compounds

Super Class

Organoheterocyclic compounds

Class

Indoles and derivatives

Sub Class

Indoles

Direct Parent

3-methylindoles

Alternative Parents

Substituents

3-methylindole
Benzenoid
Substituted pyrrole
Heteroaromatic compound
Pyrrole
Azacycle
Organic nitrogen compound
Organopnictogen compound
Hydrocarbon derivative
Organonitrogen compound
Aromatic heteropolycyclic compound

Molecular Framework

Aromatic heteropolycyclic compounds

External Descriptors

methylindole (CHEBI:9171 )
a small molecule (SKATOLE )

Ontology

Non-excretory biofluid

Biofluid or Excreta

Saliva (PMID: 24421258)

Excreta

Biofluid or Excreta

Feces (PMID: 17314143)

Cellular substructure

Membrane (HMDB: HMDB0000466)

Red beetroot (FooDB: FOOD00264)

Cabbage

Cauliflower (FooDB: FOOD00031)

Leaf vegetable

Common beet (FooDB: FOOD00025)

Process

Not Available

Role

Not Available

Physical Properties

State

Solid

Experimental Molecular Properties

Property	Value	Reference
Melting Point	97.5 °C	Not Available
Boiling Point	265.00 to 266.00 °C. @ 755.00 mm Hg	The Good Scents Company Information System
Water Solubility	0.5 mg/mL	Not Available
LogP	2.60	HANSCH,C ET AL. (1995)

Experimental Chromatographic Properties

Not Available

Predicted Molecular Properties

Property	Value	Source
Water Solubility	3.09 g/L	ALOGPS
logP	2.58	ALOGPS
logP	2.59	ChemAxon
logS	-1.6	ALOGPS
pKa (Strongest Acidic)	17.48	ChemAxon
Physiological Charge	0	ChemAxon
Hydrogen Acceptor Count	0	ChemAxon
Hydrogen Donor Count	1	ChemAxon
Polar Surface Area	15.79 Å²	ChemAxon
Rotatable Bond Count	0	ChemAxon
Refractivity	42.19 m³·mol⁻¹	ChemAxon
Polarizability	14.95 Å³	ChemAxon
Number of Rings	2	ChemAxon
Bioavailability	Yes	ChemAxon
Rule of Five	Yes	ChemAxon
Ghose Filter	No	ChemAxon
Veber's Rule	Yes	ChemAxon
MDDR-like Rule	No	ChemAxon

Predicted Chromatographic Properties

Predicted Collision Cross Sections

Predictor	Adduct Type	CCS Value (Å²)	Reference
DarkChem	[M+H]+	127.162	31661259
DarkChem	[M-H]-	125.875	31661259
AllCCS	[M+H]+	123.602	32859911
AllCCS	[M-H]-	123.856	32859911
DeepCCS	[M+H]+	126.601	30932474
DeepCCS	[M-H]-	123.437	30932474
DeepCCS	[M-2H]-	160.389	30932474
DeepCCS	[M+Na]+	135.435	30932474
AllCCS	[M+H]+	123.6	32859911
AllCCS	[M+H-H2O]+	118.6	32859911
AllCCS	[M+NH4]+	128.2	32859911
AllCCS	[M+Na]+	129.6	32859911
AllCCS	[M-H]-	123.9	32859911
AllCCS	[M+Na-2H]-	124.9	32859911
AllCCS	[M+HCOO]-	126.2	32859911

Predicted Kovats Retention Indices

Underivatized

Metabolite	SMILES	Kovats RI Value	Column Type	Reference
3-Methylindole	CC1=CNC2=C1C=CC=C2	2474.7	Standard polar	33892256
3-Methylindole	CC1=CNC2=C1C=CC=C2	1372.9	Standard non polar	33892256
3-Methylindole	CC1=CNC2=C1C=CC=C2	1386.6	Semi standard non polar	33892256

Derivatized

Derivative Name / Structure	SMILES	Kovats RI Value	Column Type	Reference
3-Methylindole,1TMS,isomer #1	CC1=CN([Si](C)(C)C)C2=CC=CC=C12	1599.7	Semi standard non polar	33892256
3-Methylindole,1TMS,isomer #1	CC1=CN([Si](C)(C)C)C2=CC=CC=C12	1508.5	Standard non polar	33892256
3-Methylindole,1TMS,isomer #1	CC1=CN([Si](C)(C)C)C2=CC=CC=C12	1695.4	Standard polar	33892256
3-Methylindole,1TBDMS,isomer #1	CC1=CN([Si](C)(C)C(C)(C)C)C2=CC=CC=C12	1831.2	Semi standard non polar	33892256
3-Methylindole,1TBDMS,isomer #1	CC1=CN([Si](C)(C)C(C)(C)C)C2=CC=CC=C12	1700.0	Standard non polar	33892256
3-Methylindole,1TBDMS,isomer #1	CC1=CN([Si](C)(C)C(C)(C)C)C2=CC=CC=C12	1843.4	Standard polar	33892256

Spectra

GC-MS Spectra

Spectrum Type	Description	Splash Key	Deposition Date	Source	View
Experimental GC-MS	GC-MS Spectrum - 3-Methylindole EI-B (Non-derivatized)	splash10-0ufr-9200000000-251c9585af60abc11fb1	2017-09-12	HMDB team, MONA, MassBank	View Spectrum
Experimental GC-MS	GC-MS Spectrum - 3-Methylindole EI-B (Non-derivatized)	splash10-0ufr-9200000000-251c9585af60abc11fb1	2018-05-18	HMDB team, MONA, MassBank	View Spectrum
Predicted GC-MS	Predicted GC-MS Spectrum - 3-Methylindole GC-MS (Non-derivatized) - 70eV, Positive	splash10-001i-1900000000-f9bb0d50c5d49c2c6c4a	2017-07-27	Wishart Lab	View Spectrum
Predicted GC-MS	Predicted GC-MS Spectrum - 3-Methylindole GC-MS (Non-derivatized) - 70eV, Positive	Not Available	2021-10-12	Wishart Lab	View Spectrum
Predicted GC-MS	Predicted GC-MS Spectrum - 3-Methylindole GC-MS (Non-derivatized) - 70eV, Positive	Not Available	2021-10-12	Wishart Lab	View Spectrum
MS	Mass Spectrum (Electron Ionization)	splash10-001i-2900000000-dba6ed7df0e1ee94cafe	2015-03-01	Not Available	View Spectrum

MS/MS Spectra

Spectrum Type	Description	Splash Key	Deposition Date	Source	View
Experimental LC-MS/MS	LC-MS/MS Spectrum - 3-Methylindole Quattro_QQQ 10V, Positive-QTOF (Annotated)	splash10-001i-0900000000-a7cd474bc90f9a0227e5	2012-07-24	HMDB team, MONA	View Spectrum
Experimental LC-MS/MS	LC-MS/MS Spectrum - 3-Methylindole Quattro_QQQ 25V, Positive-QTOF (Annotated)	splash10-014i-2900000000-cb7f6d8c4ad7b0a1523b	2012-07-24	HMDB team, MONA	View Spectrum
Experimental LC-MS/MS	LC-MS/MS Spectrum - 3-Methylindole Quattro_QQQ 40V, Positive-QTOF (Annotated)	splash10-000l-9200000000-e9a200fb7b8fc93ced48	2012-07-24	HMDB team, MONA	View Spectrum
Experimental LC-MS/MS	LC-MS/MS Spectrum - 3-Methylindole EI-B (HITACHI M-80) , Positive-QTOF	splash10-0ufr-9200000000-7120fbb6f78f440ff725	2012-08-31	HMDB team, MONA	View Spectrum
Experimental LC-MS/MS	LC-MS/MS Spectrum - 3-Methylindole Linear Ion Trap , negative-QTOF	splash10-002b-9800000000-a8de490dffcbc2cb0c24	2017-09-14	HMDB team, MONA	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 3-Methylindole 10V, Positive-QTOF	splash10-001i-0900000000-355610a12cde08bb25c8	2015-04-24	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 3-Methylindole 20V, Positive-QTOF	splash10-001i-0900000000-36a1bcb0093fec9dd5c5	2015-04-24	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 3-Methylindole 40V, Positive-QTOF	splash10-0zfr-3900000000-d8aebbf9a6779cddc735	2015-04-24	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 3-Methylindole 10V, Negative-QTOF	splash10-001i-0900000000-ed646ab44a1fcc84725b	2015-04-25	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 3-Methylindole 20V, Negative-QTOF	splash10-001i-0900000000-ed6f0939d3598782a893	2015-04-25	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 3-Methylindole 40V, Negative-QTOF	splash10-0f89-2900000000-a801a40b2fcba369d3d4	2015-04-25	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 3-Methylindole 10V, Negative-QTOF	splash10-001i-0900000000-244a9c7ac26f19950926	2021-09-23	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 3-Methylindole 20V, Negative-QTOF	splash10-001i-0900000000-e7c79bc3a884b9bd7abe	2021-09-23	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 3-Methylindole 40V, Negative-QTOF	splash10-004i-1900000000-e057600f7f225ff9cec2	2021-09-23	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 3-Methylindole 10V, Positive-QTOF	splash10-001i-0900000000-f53b130d6fbd7a49b7bd	2021-09-24	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 3-Methylindole 20V, Positive-QTOF	splash10-001i-0900000000-92ee6b9af4d8ea4f32d4	2021-09-24	Wishart Lab	View Spectrum
Predicted LC-MS/MS	Predicted LC-MS/MS Spectrum - 3-Methylindole 40V, Positive-QTOF	splash10-0v00-7900000000-f01b3fb9a64effb7bb2e	2021-09-24	Wishart Lab	View Spectrum

NMR Spectra

Spectrum Type	Description	Deposition Date	Source	View
Experimental 1D NMR	¹H NMR Spectrum (1D, 600 MHz, H₂O, experimental)	2012-12-04	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 100 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 100 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 1000 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 1000 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 200 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 200 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 300 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 300 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 400 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 400 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 500 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 500 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 600 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 600 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 700 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 700 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 800 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 800 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹³C NMR Spectrum (1D, 900 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Predicted 1D NMR	¹H NMR Spectrum (1D, 900 MHz, D₂O, predicted)	2021-09-29	Wishart Lab	View Spectrum
Experimental 2D NMR	[¹H, ¹³C]-HSQC NMR Spectrum (2D, 600 MHz, CDCl₃, experimental)	2012-12-05	Wishart Lab	View Spectrum

IR Spectra

Spectrum Type	Description	Deposition Date	Source	View
Predicted IR Spectrum	IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M-H]-)	2023-02-03	FELIX lab	View Spectrum
Predicted IR Spectrum	IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+H]+)	2023-02-03	FELIX lab	View Spectrum
Predicted IR Spectrum	IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+Na]+)	2023-02-03	FELIX lab	View Spectrum

Biological Properties

Cellular Locations

Membrane (predicted from logP)

Biospecimen Locations

Feces
Saliva

Tissue Locations

Not Available

Pathways

Not Available

Name	SMPDB/PathBank	KEGG

Normal Concentrations

Biospecimen	Status	Value	Age	Sex	Condition	Reference	Details
Feces	Detected but not Quantified	Not Quantified	Not Specified	Not Specified	Normal	21494609	details
Feces	Detected and Quantified	12189.869 nmol/g wet feces	Adult (>18 years old)	Not Specified	Normal	26416813	details
Feces	Detected but not Quantified	Not Quantified	Children (1-13 years old)	Both	Normal	24130822	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Normal	24029555	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Normal	29808030	details
Feces	Detected and Quantified	2248.913 nmol/g wet feces	Adult (>18 years old)	Not Specified	Normal	26416813	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Normal	14684577	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Normal	24811995	details
Feces	Detected and Quantified	2975.68 nmol/g wet feces	Adult (>18 years old)	Not Specified	Normal	26416813	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Normal	23454028	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Normal	17314143	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Normal	25037050	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Normal	19167006	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Normal	24922509	details
Saliva	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Not Specified	Normal	24421258	details

Abnormal Concentrations

Biospecimen	Status	Value	Age	Sex	Condition	Reference	Details
Feces	Detected but not Quantified	Not Quantified	Children (1-13 years old)	Both	autism	24130822	details
Feces	Detected but not Quantified	Not Quantified	Children (1-13 years old)	Both	Pervasive Developmental Disorder Not Otherwise Specified	24130822	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Colorectal Cancer	27275383	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Ulcerative colitis	24811995	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Crohn's disease	24811995	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Colorectal cancer	25037050	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Nonalcoholic fatty liver disease (NAFLD)	23454028	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Campylobacter jejuni infection	17314143	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Clostridium difficile infection	17314143	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Ulcerative Colitis	17314143	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Immunoglobulin A nephropathy (IgAN) non progressor	24922509	details
Feces	Detected but not Quantified	Not Quantified	Adult (>18 years old)	Both	Immunoglobulin A nephropathy (IgAN) progressor	24922509	details

Associated Disorders and Diseases

Disease References

Ulcerative colitis
Garner CE, Smith S, de Lacy Costello B, White P, Spencer R, Probert CS, Ratcliffe NM: Volatile organic compounds from feces and their potential for diagnosis of gastrointestinal disease. FASEB J. 2007 Jun;21(8):1675-88. Epub 2007 Feb 21. [PubMed:17314143 ] De Preter V, Machiels K, Joossens M, Arijs I, Matthys C, Vermeire S, Rutgeerts P, Verbeke K: Faecal metabolite profiling identifies medium-chain fatty acids as discriminating compounds in IBD. Gut. 2015 Mar;64(3):447-58. doi: 10.1136/gutjnl-2013-306423. Epub 2014 May 8. [PubMed:24811995 ]
Nonalcoholic fatty liver disease
Raman M, Ahmed I, Gillevet PM, Probert CS, Ratcliffe NM, Smith S, Greenwood R, Sikaroodi M, Lam V, Crotty P, Bailey J, Myers RP, Rioux KP: Fecal microbiome and volatile organic compound metabolome in obese humans with nonalcoholic fatty liver disease. Clin Gastroenterol Hepatol. 2013 Jul;11(7):868-75.e1-3. doi: 10.1016/j.cgh.2013.02.015. Epub 2013 Feb 27. [PubMed:23454028 ]
Autism
De Angelis M, Piccolo M, Vannini L, Siragusa S, De Giacomo A, Serrazzanetti DI, Cristofori F, Guerzoni ME, Gobbetti M, Francavilla R: Fecal microbiota and metabolome of children with autism and pervasive developmental disorder not otherwise specified. PLoS One. 2013 Oct 9;8(10):e76993. doi: 10.1371/journal.pone.0076993. eCollection 2013. [PubMed:24130822 ]
Pervasive developmental disorder not otherwise specified
De Angelis M, Piccolo M, Vannini L, Siragusa S, De Giacomo A, Serrazzanetti DI, Cristofori F, Guerzoni ME, Gobbetti M, Francavilla R: Fecal microbiota and metabolome of children with autism and pervasive developmental disorder not otherwise specified. PLoS One. 2013 Oct 9;8(10):e76993. doi: 10.1371/journal.pone.0076993. eCollection 2013. [PubMed:24130822 ]
Crohn's disease
De Preter V, Machiels K, Joossens M, Arijs I, Matthys C, Vermeire S, Rutgeerts P, Verbeke K: Faecal metabolite profiling identifies medium-chain fatty acids as discriminating compounds in IBD. Gut. 2015 Mar;64(3):447-58. doi: 10.1136/gutjnl-2013-306423. Epub 2014 May 8. [PubMed:24811995 ]
Colorectal cancer
Brown DG, Rao S, Weir TL, O'Malia J, Bazan M, Brown RJ, Ryan EP: Metabolomics and metabolic pathway networks from human colorectal cancers, adjacent mucosa, and stool. Cancer Metab. 2016 Jun 6;4:11. doi: 10.1186/s40170-016-0151-y. eCollection 2016. [PubMed:27275383 ] Goedert JJ, Sampson JN, Moore SC, Xiao Q, Xiong X, Hayes RB, Ahn J, Shi J, Sinha R: Fecal metabolomics: assay performance and association with colorectal cancer. Carcinogenesis. 2014 Sep;35(9):2089-96. doi: 10.1093/carcin/bgu131. Epub 2014 Jul 18. [PubMed:25037050 ]

Associated OMIM IDs

209850 (Autism)
266600 (Crohn's disease)
114500 (Colorectal cancer)

External Links

DrugBank ID

Not Available

Phenol Explorer Compound ID

Not Available

FooDB ID

KNApSAcK ID

Chemspider ID

KEGG Compound ID

BioCyc ID

BiGG ID

Not Available

Wikipedia Link

Skatole

METLIN ID

5453

PubChem Compound

6736

PDB ID

Not Available

ChEBI ID

9171

Food Biomarker Ontology

Not Available

VMH ID

Not Available

MarkerDB ID

Not Available

Good Scents ID

rw1006331

References

Synthesis Reference

Xu, Jianguo; Xu, Lili; Shi, Hongxin. Synthesis of 3-methylindole and its new purification method. Huagong Shengchan Yu Jishu (2005), 12(4), 12-14.

Material Safety Data Sheet (MSDS)

Download (PDF)

General References

Karlin DA, Mastromarino AJ, Jones RD, Stroehlein JR, Lorentz O: Fecal skatole and indole and breath methane and hydrogen in patients with large bowel polyps or cancer. J Cancer Res Clin Oncol. 1985;109(2):135-41. [PubMed:3980562 ]
Moore JG, Jessop LD, Osborne DN: Gas-chromatographic and mass-spectrometric analysis of the odor of human feces. Gastroenterology. 1987 Dec;93(6):1321-9. [PubMed:3678751 ]
Cooke M, Leeves N, White C: Time profile of putrescine, cadaverine, indole and skatole in human saliva. Arch Oral Biol. 2003 Apr;48(4):323-7. [PubMed:12663078 ]
Zuccato E, Venturi M, Di Leo G, Colombo L, Bertolo C, Doldi SB, Mussini E: Role of bile acids and metabolic activity of colonic bacteria in increased risk of colon cancer after cholecystectomy. Dig Dis Sci. 1993 Mar;38(3):514-9. [PubMed:8444084 ]
Muller T, Thissen R, Braun S, Dott W, Fischer G: (M)VOC and composting facilities. Part 2: (M)VOC dispersal in the environment. Environ Sci Pollut Res Int. 2004;11(3):152-7. [PubMed:15259697 ]
Codipilly DP, Kaufman HW, Kleinberg I: Use of a novel group of oral malodor measurements to evaluate an anti-oral malodor mouthrinse (TriOralTM) in humans. J Clin Dent. 2004;15(4):98-104. [PubMed:15794454 ]
Whitehead TR, Price NP, Drake HL, Cotta MA: Catabolic pathway for the production of skatole and indoleacetic acid by the acetogen Clostridium drakei, Clostridium scatologenes, and swine manure. Appl Environ Microbiol. 2008 Mar;74(6):1950-3. doi: 10.1128/AEM.02458-07. Epub 2008 Jan 25. [PubMed:18223109 ]
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Enzymes

Enzyme Details

1. Cytochrome P450 2F1

General function:: Secondary metabolites biosynthesis, transport and catabolism
Specific function:: May be involved in the metabolism of various pneumotoxicants including naphthalene. Is able to dealkylate ethoxycoumarin, propoxycoumarin, and pentoxyresorufin but possesses no activity toward ethoxyresorufin and only trace dearylation activity toward benzyloxyresorufin. Bioactivates 3-methylindole (3MI) by dehydrogenation to the putative electrophile 3-methylene-indolenine.
Gene Name:: CYP2F1
Uniprot ID:: P24903
Molecular weight:: 55500.64

Enzyme Details

2. Aryl hydrocarbon receptor

General function:: Involved in transcription regulator activity
Specific function:: Ligand-activated transcriptional activator. Binds to the XRE promoter region of genes it activates. Activates the expression of multiple phase I and II xenobiotic chemical metabolizing enzyme genes (such as the CYP1A1 gene). Mediates biochemical and toxic effects of halogenated aromatic hydrocarbons. Involved in cell-cycle regulation. Likely to play an important role in the development and maturation of many tissues
Gene Name:: AHR
Uniprot ID:: P35869
Molecular weight:: 96146.7

Showing metabocard for 3-Methylindole (HMDB0000466)

MOL for HMDB0000466 (3-Methylindole)

3D MOL for HMDB0000466 (3-Methylindole)

3D SDF for HMDB0000466 (3-Methylindole)

3D-SDF for HMDB0000466 (3-Methylindole)

PDB for HMDB0000466 (3-Methylindole)

3D PDB for HMDB0000466 (3-Methylindole)

SMILES for HMDB0000466 (3-Methylindole)

INCHI for HMDB0000466 (3-Methylindole)

Structure for HMDB0000466 (3-Methylindole)

3D Structure for HMDB0000466 (3-Methylindole)

Predicted Collision Cross Sections

Predicted Kovats Retention Indices

Underivatized

Derivatized

GC-MS Spectra

MS/MS Spectra

NMR Spectra

IR Spectra

Enzymes