Indole-3-butyric acid
Also known as: 1H-Indole-3-butanoic acid, 1H-Indole-3-butyric acid, 3-Indolebutyric acid, 3-Indolybutyric acid, 4-(1H-Indol-3-yl)butanoic acid, 4-(1H-Indol-3-yl)butyric acid, 4-(3-Indolyl)butanoic acid, 4-(3-Indolyl)butyric acid, IBA, Indole-3-butyric acid, Indolebutyric acid, Seradix, hormexrootingpowder, jiffygrow
Indole-3-butyric acid (CAS 133-32-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H13NO2 and a molecular weight of 203.237 g/mol. Key properties include a melting point of 124-125.5 °C(lit.), a boiling point of 426.6±20.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 211.8±21.8 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 133-32-4
- Jingsj CID
- J-3019-3
- Molecular Formula
- C12H13NO2
- Molecular Weight
- 203.237 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 124-125.5 °C(lit.) |
|---|---|
| Boiling Point | 426.6±20.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 211.8±21.8 °C |
| Exact Mass | 203.094635 |
| PSA | 53.09000 |
| LogP | 2.34 |
| Vapor Pressure | 0.0±1.1 mmHg at 25°C |
| Refractive Index | 1.646 |
| Storage Conditions | 2-8°C |
| Stability | Stable. Incompatible with strong oxidizing agents. Light sensitive. |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
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 Indole-3-butyric acid?
The CAS number of Indole-3-butyric acid is 133-32-4.
What are the molecular formula and molecular weight of Indole-3-butyric acid?
Indole-3-butyric acid has molecular formula C12H13NO2 and molecular weight 203.237 g/mol.
Is Indole-3-butyric acid hazardous?
Indole-3-butyric acid has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of Indole-3-butyric acid?
For Indole-3-butyric acid, Upstream Products: Indole, 1,2,3,4-Tetrahydrocyclopenta[b]indole; Downstream Products: Sodium 3-indolebutyrate, Siramesine, 2,3,4,9-Tetrahydro-1H-carbazol-1-one.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Indole-3-butyric acid (CAS 133-32-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3019-3 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.