4-Fluoro-1H-pyrrolo[2,3-b]pyridine

Also known as: 4-Fluoro-7-azaindole, 1H-Pyrrolo[2,3-b]pyridine, 4-fluoro-, 4-Fluoro-1H-pyrrolo[2,3-b]pyridine

4-Fluoro-1H-pyrrolo[2,3-b]pyridine (CAS 640735-23-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H5FN2 and a molecular weight of 136.126 g/mol. Key properties include a melting point of 118-120ºC and a density of 1.4±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 640735-23-5
Jingsj CID: J-1494843-7
Molecular Formula: C₇H₅FN₂
Molecular Weight: 136.126 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	118-120ºC
Density	1.4±0.1 g/cm3
Exact Mass	136.043671
PSA	28.68000
LogP	1.77
Refractive Index	1.659
Storage Conditions	Refrigerator

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 4-Fluoro-1H-pyrrolo[2,3-b]pyridine?

The CAS number of 4-Fluoro-1H-pyrrolo[2,3-b]pyridine is 640735-23-5.

What are the molecular formula and molecular weight of 4-Fluoro-1H-pyrrolo[2,3-b]pyridine?

4-Fluoro-1H-pyrrolo[2,3-b]pyridine has molecular formula C7H5FN2 and molecular weight 136.126 g/mol.

What are the upstream and downstream products of 4-Fluoro-1H-pyrrolo[2,3-b]pyridine?

For 4-Fluoro-1H-pyrrolo[2,3-b]pyridine, Upstream Products: 4-Fluoro-1-(triisopropylsilyl)-1H-pyrrolo[2,3-b]pyridine, 1H-pyrrolo[2,3-b]pyridin-4-amine, 4-Chloro-1H-pyrrolo[2,3-b]pyridine; Downstream Products: 4-Fluoro-3-nitro-1H-pyrrolo[2,3-b]pyridine.

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

Last updated: 8/21/2026

How to cite: Jingsj. "4-Fluoro-1H-pyrrolo[2,3-b]pyridine (CAS 640735-23-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1494843-7 (accessed 2026-11-09).

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