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5-Hydroxy-7-azaindole

Also known as: 1H-Pyrrolo[2,3-b]pyridin-5-ol, 5-Hydroxy-1H-pyrrolo[2,3-b]pyridine, 5-Hydroxypyrrolo[2,3-b]pyridine

5-Hydroxy-7-azaindole (CAS 98549-88-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H6N2O and a molecular weight of 134.135 g/mol. Key properties include a melting point of 219-220ºC, a boiling point of 369.7±22.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 177.4±22.3 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
98549-88-3
Jingsj CID
J-1353300-1
Molecular Formula
C7H6N2O
Molecular Weight
134.135 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point219-220ºC
Boiling Point369.7±22.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point177.4±22.3 °C
Exact Mass134.048019
PSA48.91000
LogP1.38
Vapor Pressure0.0±0.9 mmHg at 25°C
Refractive Index1.760
Storage Conditions2-8°C

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed

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-Hydroxy-7-azaindole?

The CAS number of 5-Hydroxy-7-azaindole is 98549-88-3.

What are the molecular formula and molecular weight of 5-Hydroxy-7-azaindole?

5-Hydroxy-7-azaindole has molecular formula C7H6N2O and molecular weight 134.135 g/mol.

Is 5-Hydroxy-7-azaindole hazardous?

5-Hydroxy-7-azaindole has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.

What are the upstream and downstream products of 5-Hydroxy-7-azaindole?

For 5-Hydroxy-7-azaindole, Upstream Products: 1-(Triisopropylsilyl)-1H-pyrrolo[2,3-b]pyridin-5-ol, 5-Methoxy-1H-pyrrolo[2,3-b]pyridine, 2,3-Dihydro-7-azaindole.

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-Hydroxy-7-azaindole (CAS 98549-88-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1353300-1 (accessed 2026-11-09).

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