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5-Cyanoindole

Also known as: 1H-Indole-5-carbonitrile, 5-Cyano-1H-indole, 5-CI, Indole-5-carbonitrile, 5-Indolecarbonitrile

5-Cyanoindole (CAS 15861-24-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H6N2 and a molecular weight of 142.16 g/mol. Key properties include a melting point of 106-108 °C(lit.), a boiling point of 350.0±15.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 121.9±5.6 °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.
15861-24-2
Jingsj CID
J-19124-2
Molecular Formula
C9H6N2
Molecular Weight
142.16 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point106-108 °C(lit.)
Boiling Point350.0±15.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point121.9±5.6 °C
Exact Mass142.053101
PSA39.58000
LogP2.36
Vapor Pressure0.0±0.8 mmHg at 25°C
Refractive Index1.675

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2933990090
Summary2933990090. 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 5-Cyanoindole?

The CAS number of 5-Cyanoindole is 15861-24-2.

What are the molecular formula and molecular weight of 5-Cyanoindole?

5-Cyanoindole has molecular formula C9H6N2 and molecular weight 142.16 g/mol.

Is 5-Cyanoindole hazardous?

5-Cyanoindole 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 5-Cyanoindole?

For 5-Cyanoindole, Upstream Products: 5-Bromoindole, 5-Iodo-1H-indole, Copper(I) cyanide; Downstream Products: 1-Boc-5-cyanoindole-2-boronic acid, (2-Methyl-1H-indol-5-yl)methanamine, 1-methyl-1H-indole-5-carbonitrile.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "5-Cyanoindole (CAS 15861-24-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-19124-2 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.