Chemical Formula: C9H9N

Chemical Formula C9H9N

Found 65 metabolite its formula value is C9H9N

3-Methylindole

3-Methyl-4,5-benzopyrrole

C9H9N (131.0734954)


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). 3-methylindole, also known as skatol or 3-methyl-4,5-benzopyrrole, is a member of the class of compounds known as 3-methylindoles. 3-methylindoles are aromatic heterocyclic compounds that contain an indole moiety substituted at the 3-position with a methyl group. 3-methylindole is slightly soluble (in water) and an extremely weak acidic compound (based on its pKa). 3-methylindole is a very strong, animal, and civet tasting compound found in common beet and red beetroot, which makes 3-methylindole a potential biomarker for the consumption of these food products. 3-methylindole can be found primarily in feces and saliva. 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". Skatole was discovered in 1877 by the German physician Ludwig Brieger (1849–1919). Skatole is also used by U.S. military in its non-lethal weaponry; specifically, malodorants . Skatole. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=83-34-1 (retrieved 2024-07-02) (CAS RN: 83-34-1). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). Skatole is produced by intestinal bacteria, regulates intestinal epithelial cellular functions through activating aryl hydrocarbon receptors and p38[1]. Skatole is produced by intestinal bacteria, regulates intestinal epithelial cellular functions through activating aryl hydrocarbon receptors and p38[1].

   

Tolylacetonitrile

Tolylacetonitrile; o-Tolylacetonitrile; o-Methylbenzyl cyanide; 2-Methylbezeneacetonitrile

C9H9N (131.0734954)


   

Benzenepropanenitrile

beta-Phenyl propionitrile

C9H9N (131.0734954)


Constituent of Brassica napus (rape seed) and Nasturtium officinale (water cress). Benzenepropanenitrile is found in brassicas, herbs and spices, and white mustard. Benzenepropanenitrile is found in brassicas. Benzenepropanenitrile is a constituent of Brassica napus (rape seed) and Nasturtium officinale (water cress)

   

1-Methylindole

1-Methylindole monopicrate

C9H9N (131.0734954)


   

1,2-Dihydroisoquinoline

1,2-dihydroisoquinoline

C9H9N (131.0734954)


   

1,2-Dihydroquinoline

1,2-Dihydroquinoline

C9H9N (131.0734954)


   

2-Methylindole

2-Methylindole sodium salt

C9H9N (131.0734954)


   

6-Methyl indole

6-Methyl-1H-indole

C9H9N (131.0734954)


   

6-Methylindole

6-Methylindole

C9H9N (131.0734954)


   

2-METHYLINDOLE

2-METHYLINDOLE

C9H9N (131.0734954)


CONFIDENCE standard compound; INTERNAL_ID 8018

   

2,6-dimethylbenzonitrile|2,6-dimethylphenyl isocyanate|2,6-dimethylphenyl isocyanide|2,6-dimethylphenylisocyanide|2,6-xylyl isocyanide|2-cyano-m-xylene|dimethylphenyl isocyanide

2,6-dimethylbenzonitrile|2,6-dimethylphenyl isocyanate|2,6-dimethylphenyl isocyanide|2,6-dimethylphenylisocyanide|2,6-xylyl isocyanide|2-cyano-m-xylene|dimethylphenyl isocyanide

C9H9N (131.0734954)


   

3,4-Dimethyl-1-benzonitrile|3,4-Dimethyl-benzonitril|3,4-dimethyl-benzonitrile|3,4-dimethylbenzonitrile|3,4-dimethylbenzylnitrile|3,4-o-xylonitrile|4-cyano-o-xylene|Nitrile-3,4-Dimethylbenzoic acid|Xylylic acid nitrile

3,4-Dimethyl-1-benzonitrile|3,4-Dimethyl-benzonitril|3,4-dimethyl-benzonitrile|3,4-dimethylbenzonitrile|3,4-dimethylbenzylnitrile|3,4-o-xylonitrile|4-cyano-o-xylene|Nitrile-3,4-Dimethylbenzoic acid|Xylylic acid nitrile

C9H9N (131.0734954)


   

5-METHYLINDOLE

5-METHYLINDOLE

C9H9N (131.0734954)


   

2,3-Dimethyl-benzonitril|2,3-dimethyl-benzonitrile|2,3-dimethylbenzonitrile|dimethyl benzonitrile

2,3-Dimethyl-benzonitril|2,3-dimethyl-benzonitrile|2,3-dimethylbenzonitrile|dimethyl benzonitrile

C9H9N (131.0734954)


   

1-cyano-4-ethylbenzene|4-cyanoethylbenzene|4-ethyl-benzonitrile|4-ethylbenzonitrile|4-EtPhCN|p-cyanoethylbenzene|p-ethylbenzonitrile

1-cyano-4-ethylbenzene|4-cyanoethylbenzene|4-ethyl-benzonitrile|4-ethylbenzonitrile|4-EtPhCN|p-cyanoethylbenzene|p-ethylbenzonitrile

C9H9N (131.0734954)


   

1-cyano-3-ethylbenzene|3-Aethyl-benzonitril|3-Ethyl-benzoenitril|3-ethyl-benzonitrile|3-Ethylbenzonitril|m-cyanoethylbenzene|m-ethylbenzonitrile

1-cyano-3-ethylbenzene|3-Aethyl-benzonitril|3-Ethyl-benzoenitril|3-ethyl-benzonitrile|3-Ethylbenzonitril|m-cyanoethylbenzene|m-ethylbenzonitrile

C9H9N (131.0734954)


   

4-Methylindole

4-Methylindole

C9H9N (131.0734954)


   

2,5-Dimethyl-1-benzonitrile|2,5-Dimethyl-benzonitril|2,5-dimethyl-benzonitrile|2,5-dimethylbenzonitrile|2,5-dimethylcyanobenzene|2,5-p-xylonitrile|2-cyano-1,4-dimethylbenzene|Nitrile-2,5-Dimethylbenzoic acid

2,5-Dimethyl-1-benzonitrile|2,5-Dimethyl-benzonitril|2,5-dimethyl-benzonitrile|2,5-dimethylbenzonitrile|2,5-dimethylcyanobenzene|2,5-p-xylonitrile|2-cyano-1,4-dimethylbenzene|Nitrile-2,5-Dimethylbenzoic acid

C9H9N (131.0734954)


   

7-Methylindole

7-Methylindole

C9H9N (131.0734954)


   

1,2-dihydroisoquinoline

1,2-dihydroisoquinoline

C9H9N (131.0734954)


   

3-Methylindole

3-Methylindole

C9H9N (131.0734954)


Skatole is produced by intestinal bacteria, regulates intestinal epithelial cellular functions through activating aryl hydrocarbon receptors and p38[1]. Skatole is produced by intestinal bacteria, regulates intestinal epithelial cellular functions through activating aryl hydrocarbon receptors and p38[1].

   

Skatole

3-Methylindole

C9H9N (131.0734954)


A methylindole carrying a methyl substituent at position 3. It is produced during the anoxic metabolism of L-tryptophan in the mammalian digestive tract. Skatole is produced by intestinal bacteria, regulates intestinal epithelial cellular functions through activating aryl hydrocarbon receptors and p38[1]. Skatole is produced by intestinal bacteria, regulates intestinal epithelial cellular functions through activating aryl hydrocarbon receptors and p38[1].

   

Skatole_major

Skatole_major

C9H9N (131.0734954)


   

Phenethyl cyanide

beta-Phenyl propionitrile

C9H9N (131.0734954)


   

4-Methyindole

4-Methyindole

C9H9N (131.0734954)


   

P-Tolyacetonitrile

P-Tolyacetonitrile

C9H9N (131.0734954)


   

3,4-Dimethylbenzonitrile

3,4-Dimethylbenzonitrile

C9H9N (131.0734954)


   

3-METHYLBENZYLISOCYANIDE

3-METHYLBENZYLISOCYANIDE

C9H9N (131.0734954)


   

2-Ethynyl-4-methylaniline

2-Ethynyl-4-methylaniline

C9H9N (131.0734954)


   

2 5-DIMETHYLPHENYL ISOCYANIDE

2 5-DIMETHYLPHENYL ISOCYANIDE

C9H9N (131.0734954)


   

2-Ethynyl-4-aminotoluene

2-Ethynyl-4-aminotoluene

C9H9N (131.0734954)


   

3-phenylprop-2-yn-1-amine

3-phenylprop-2-yn-1-amine

C9H9N (131.0734954)


   

1-chloro-3,5-dimethoxy-2-nitrobenzene

1-chloro-3,5-dimethoxy-2-nitrobenzene

C9H9N (131.0734954)


   

2,6-dimethylphenyl isocyanide

2,6-dimethylphenyl isocyanide

C9H9N (131.0734954)


   

2-METHYLBENZYLISOCYANIDE

2-METHYLBENZYLISOCYANIDE

C9H9N (131.0734954)


   

(1-Isocyanoethyl)benzene

(1-Isocyanoethyl)benzene

C9H9N (131.0734954)


   

Benzenamine,N-2-propyn-1-yl-

Benzenamine,N-2-propyn-1-yl-

C9H9N (131.0734954)


   

Tripropargylamine

Tripropargylamine

C9H9N (131.0734954)


   

3-Ethylbenzonitrile

3-Ethylbenzonitrile

C9H9N (131.0734954)


   

2,6-dimethylbenzonitrile

2,6-dimethylbenzonitrile

C9H9N (131.0734954)


   

ALPHA-METHYLPHENYLACETONITRILE

ALPHA-METHYLPHENYLACETONITRILE

C9H9N (131.0734954)


   

4-Ethynyl-2,6-dimethylpyridine

4-Ethynyl-2,6-dimethylpyridine

C9H9N (131.0734954)


   

(2-ISOCYANOETHYL)BENZENE

(2-ISOCYANOETHYL)BENZENE

C9H9N (131.0734954)


   

(S)-(-)-ALPHA-METHYLBENZYL ISOCYANIDE

(S)-(-)-ALPHA-METHYLBENZYL ISOCYANIDE

C9H9N (131.0734954)


   

3,5-Dimethylbenzonitrile

3,5-Dimethylbenzonitrile

C9H9N (131.0734954)


   

Benzenamine, 5-ethynyl-2-methyl- (9CI)

Benzenamine, 5-ethynyl-2-methyl- (9CI)

C9H9N (131.0734954)


   

2-ETHYLBENZONITRILE

2-ETHYLBENZONITRILE

C9H9N (131.0734954)


   

1-(4-Ethynylphenyl)methanamine

1-(4-Ethynylphenyl)methanamine

C9H9N (131.0734954)


   

2,4-DIMETHYLPHENYL ISOCYANIDE

2,4-DIMETHYLPHENYL ISOCYANIDE

C9H9N (131.0734954)


   

Pyridine,2-ethynyl-4,5-dimethyl-(9Cl)

Pyridine,2-ethynyl-4,5-dimethyl-(9Cl)

C9H9N (131.0734954)


   

2,4-DIMETHYLBENZONITRILE

2,4-DIMETHYLBENZONITRILE

C9H9N (131.0734954)


   

2,3-Dimethylbenzonitrile

2,3-Dimethylbenzonitrile

C9H9N (131.0734954)


   

2,5-Dimethylbenzonitrile

2,5-Dimethylbenzonitrile

C9H9N (131.0734954)


   

3,4-Dihydroisoquinoline

3,4-Dihydroisoquinoline

C9H9N (131.0734954)


   

3-(PHENYLMETHYL)-2H-AZIRINE

3-(PHENYLMETHYL)-2H-AZIRINE

C9H9N (131.0734954)


   

4-Ethylbenzonitrile

4-Ethylbenzonitrile

C9H9N (131.0734954)


   

2H-quinolizine

2H-quinolizine

C9H9N (131.0734954)


   

9aH-quinolizine

9aH-quinolizine

C9H9N (131.0734954)


   

3420-02-8

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

C9H9N (131.0734954)


   

Skatol

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

C9H9N (131.0734954)


Skatole is produced by intestinal bacteria, regulates intestinal epithelial cellular functions through activating aryl hydrocarbon receptors and p38[1]. Skatole is produced by intestinal bacteria, regulates intestinal epithelial cellular functions through activating aryl hydrocarbon receptors and p38[1].

   

AI3-23733

InChI=1\C9H9N\c10-8-4-7-9-5-2-1-3-6-9\h1-3,5-6H,4,7H

C9H9N (131.0734954)


   

4H-quinolizine

4H-quinolizine

C9H9N (131.0734954)


   

2-Methylbenzyl cyanide

2-(o-Tolyl)acetonitrile

C9H9N (131.0734954)


   

Benzenepropanenitrile

Benzenepropanenitrile

C9H9N (131.0734954)


   

Methylindole

Methylindole

C9H9N (131.0734954)