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4-Hydroxy-7-azaindole

Also known as: 1H-Pyrrolo[2,3-b]pyridin-4-ol, 1,7-dihydropyrrolo[2,3-b]pyridin-4-one, 4-Hydroxy-7-aza-1H-indole, 7-H-Pyrrolo[2,3-b]pyridine-4-ol

4-Hydroxy-7-azaindole (CAS 74420-02-3) 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 property: a density of 1.4±0.1 g/cm3. 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.
74420-02-3
Jingsj CID
J-1359092-6
Molecular Formula
C7H6N2O
Molecular Weight
134.135 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026
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Physicochemical Properties

Density1.4±0.1 g/cm3
Exact Mass134.048019
PSA48.91000
LogP2.18
Refractive Index1.760

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 4-Hydroxy-7-azaindole?

The CAS number of 4-Hydroxy-7-azaindole is 74420-02-3.

What are the molecular formula and molecular weight of 4-Hydroxy-7-azaindole?

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

Is 4-Hydroxy-7-azaindole hazardous?

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

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

Last updated:

How to cite: Jingsj. "4-Hydroxy-7-azaindole (CAS 74420-02-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1359092-6 (accessed 2026-11-09).

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