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5-Iodo-1H-indole

Also known as: 5-Iodoindole, 5-Iodo-1H-indole, 1H-Indole, 5-iodo-, 5-Indoindole

5-Iodo-1H-indole (CAS 16066-91-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H6IN and a molecular weight of 243.044 g/mol. Key properties include a melting point of 101-104 °C(lit.), a boiling point of 341.7±15.0 °C at 760 mmHg, a density of 2.0±0.1 g/cm3 and a flash point of 160.5±20.4 °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.
16066-91-4
Jingsj CID
J-1446919-3
Molecular Formula
C8H6IN
Molecular Weight
243.044 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point101-104 °C(lit.)
Boiling Point341.7±15.0 °C at 760 mmHg
Density2.0±0.1 g/cm3
Flash Point160.5±20.4 °C
Exact Mass242.954483
PSA15.79000
LogP3.26
Vapor Pressure0.0±0.7 mmHg at 25°C
Refractive Index1.769

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-Iodo-1H-indole?

The CAS number of 5-Iodo-1H-indole is 16066-91-4.

What are the molecular formula and molecular weight of 5-Iodo-1H-indole?

5-Iodo-1H-indole has molecular formula C8H6IN and molecular weight 243.044 g/mol.

Is 5-Iodo-1H-indole hazardous?

5-Iodo-1H-indole 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-Iodo-1H-indole?

For 5-Iodo-1H-indole, Upstream Products: 5-Bromoindole, 5-iodoindoline, 5-Bromo-1-(tert-butyldimethylsilyl)-1H-indole; Downstream Products: tert-Butyl 5-iodo-1H-indole-1-carboxylate, 5-(2-Thienyl)-1H-indole, 5-Iodo-1,3-dihydro-2H-indol-2-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. "5-Iodo-1H-indole (CAS 16066-91-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1446919-3 (accessed 2026-11-09).

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