Record Information
Version1.0
Creation date2015-10-09 22:27:52 UTC
Update date2017-01-19 02:36:11 UTC
FoodComEx IDPC000066
FoodDB RecordNot Available
Chemical Information
Name3-Methyl-1H-indole
DescriptionA major contributor to boar taint in meat products from uncastrated male pigs. Flavouring ingredient It is one of many compounds that is attractive to males of various species of orchid bees, who apparently gather the chemical to synthesize pheromones; it is commonly used as bait to attract and collect these bees for study.; Skatole can be found as a white crystalline or fine powder solid, and it browns upon aging. It is nitrogenous and one of the rings is a pyrrole. It is soluble in alcohol and benzene and it gives a violet color in potassium ferrocyanide (K4Fe(CN)6·3H2O) and sulfuric acid (H2SO4). Skatole has a double ring system which displays aromaticity. It is continuous (all atoms in the ring are sp² hybridized), planar, and follows the 4n+2 rule because it has 10 ? electrons. It can be synthesized through a Fischer indole synthesis which was developed by Emil Fischer.; Skatole can be found as a white crystalline or fine powder solid, and it browns upon aging. It is nitrogenous and one of the rings is a pyrrole. This is probably the reason it's so foul smelling. It is soluble in alcohol and benzene and it gives violet color in potassium ferrocyanide (K4Fe(CN)6.3H2O) and 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. It can be synthesized through a Fischer indole synthesis which was developed by Emil Fischer.In a 1994 report released by five top cigarette companies, skatole was listed as one of the 599 additives to cigarettes. It is a flavoring ingredient. Skatole or 3-methylindole is a mildly toxic white crystalline organic compound with chemical formula C9H9N and CAS number 83-34-1. The compound belongs to the indole family and has a methyl substituent in position 3 of the indole ring. It occurs naturally in feces (it is produced from tryptophan in the mammalian digestive tract), beets, and coal tar, and has a strong fecal odor. In low concentrations it has a flowery smell and is found in several flowers and essential oils, including those of orange blossoms, jasmine, and Ziziphus mauritiana. It is used as a fragrance and fixative in many perfumes and as an aroma compound. Its name is derived from skato, the Greek word for dung.; Skatole or 3-methylindole is a mildly toxic white crystalline organic compound belonging to the indole family. It occurs naturally in feces (it is produced from tryptophan in the mammalian digestive tract), and coal tar, and has a strong fecal odor. In low concentrations it has a flowery smell and is found in several flowers and essential oils, including those of orange blossoms, jasmine, and Ziziphus mauritiana. It is used as a fragrance and fixative in many perfumes and as an aroma compound. Its name is derived from the Greek root skato- meaning "dung".
CAS Number83-34-1
Structure
Thumb
Synonyms
SynonymSource
β-methylindolebiospider
1H-Indole, 3-methyl-biospider
3 Methylindolebiospider
3-methyl-2,3-dihydro-1H-indolebiospider
3-methyl-4,5-benzopyrrolebiospider
3-methylindolebiospider
3-Methylindole (skatol)biospider
3-Methylindole (skatole)biospider
3-methylindolinebiospider
3-MIHMDB
b-Methylindoledb_source
Beta-methylindolebiospider
FEMA 3019db_source
Indole, 3-methyl-biospider
Indole, 3-methyl- (skatole)biospider
methyl-3-indolebiospider
Scatoledb_source
Skatolbiospider
Skatoledb_source
β-methylindoleGenerator
Chemical FormulaNot Available
IUPAC nameNot Available
InChI IdentifierInChI=1S/C9H9N/c1-7-6-10-9-5-3-2-4-8(7)9/h2-6,10H,1H3
InChI KeyZFRKQXVRDFCRJG-UHFFFAOYSA-N
Isomeric SMILESCC1=CNC2=C1C=CC=C2
Average Molecular Weight131.1745
Monoisotopic Molecular Weight131.073499293
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.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassIndoles and derivatives
Sub ClassIndoles
Direct Parent3-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 FrameworkAromatic heteropolycyclic compounds
External Descriptors
Physico-Chemical Properties - Experimental
PropertyValueReference
Experimental logP2.60HANSCH,C ET AL. (1995)
Experimental Water Solubility0.498 mg/mL at 25 oCPEARLMAN,RS et al. (1984)
Melting PointMp 95°DFC
Foods of Origin
FoodContent Range AverageReference
FoodReference
Production Data
Production Methodcommercial
Production Method ReferenceNot Available
Production Method Reference FileNot Available
Quantity AvailableProduction upon request, up to 5 g
Delivery TimeNot Available
Storage Formsolid
Storage Conditions-80°C
StabilityNot Available
PurityNot Available
Spectra
Spectral Data Upon RequestNot Available
Provider Information
Contact NameContact InstitutionContact Email
Rosa Vazquez Fresnovazquezf@ualberta.ca
Commercial Vendors
AKSci D132
AKSci J10568
AKSci J10963
AKSci J93622
AKSci HMDB0000466
MetaSci HMDB0000466
Toronto Research Chemicals M313470