3-Methylindole
Also known as: Skatole, Scatol, 3-Methyl-1H-indole, SKATOLE, SKATOL, β-Methylindole, FEMA 3019
3-Methylindole (CAS 83-34-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H9N and a molecular weight of 131.17 g/mol. Key properties include a melting point of 92-97 °C(lit.), a boiling point of 265.1±9.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 112.5±11.3 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 83-34-1
- Jingsj CID
- J-900130-3
- Molecular Formula
- C9H9N
- Molecular Weight
- 131.17 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 92-97 °C(lit.) |
|---|---|
| Boiling Point | 265.1±9.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 112.5±11.3 °C |
| Exact Mass | 131.073502 |
| PSA | 15.79000 |
| LogP | 2.60 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.655 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
- H411 — Toxic to aquatic life with long lasting effects
Activity & Biological Data
| Target | p38 Aryl hydrocarbon receptor |
|---|---|
| Additional Information | [1]. Kurata K, et al. Skatole regulates intestinal epithelial cellular functions through activating aryl hydrocarbon receptors and p38. Biochem Biophys Res Commun. 2019 Feb 7. |
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 3-Methylindole?
The CAS number of 3-Methylindole is 83-34-1.
What are the molecular formula and molecular weight of 3-Methylindole?
3-Methylindole has molecular formula C9H9N and molecular weight 131.17 g/mol.
Is 3-Methylindole hazardous?
3-Methylindole has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 3-Methylindole?
For 3-Methylindole, Upstream Products: Indole-3-carboxaldehyde, 1-Bromo-2-iodobenzene, Glycerol; Downstream Products: 2'-Aminoacetophenone, 3-(3-Methyl-1H-indol-1-yl)propanoic acid, Indole-3-carboxaldehyde.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Methylindole (CAS 83-34-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-900130-3 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.