Furo[3,2-b]pyridine 4-oxide

Also known as: 4-oxidofuro[3,2-b]pyridin-4-ium, Furo[3,2-b]pyridine,4-oxide(9CI), Ripretinib Impurity 43, Furo[3,2-b]pyridine 4-oxide

Furo[3,2-b]pyridine 4-oxide (CAS 181526-18-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H5NO2 and a molecular weight of 135.12000 g/mol. Key properties include a boiling point of 251.338ºC at 760 mmHg, a density of 1.317g/cm3 and a flash point of 105.806ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 181526-18-1
Jingsj CID: J-1509174-4
Molecular Formula: C₇H₅NO₂
Molecular Weight: 135.12000 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Boiling Point	251.338ºC at 760 mmHg
Density	1.317g/cm3
Flash Point	105.806ºC
Exact Mass	135.03200
PSA	38.60000
LogP	1.86130
Vapor Pressure	0.033mmHg at 25°C
Refractive Index	1.617

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. 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 Furo[3,2-b]pyridine 4-oxide?

The CAS number of Furo[3,2-b]pyridine 4-oxide is 181526-18-1.

What are the molecular formula and molecular weight of Furo[3,2-b]pyridine 4-oxide?

Furo[3,2-b]pyridine 4-oxide has molecular formula C7H5NO2 and molecular weight 135.12000 g/mol.

What are the upstream and downstream products of Furo[3,2-b]pyridine 4-oxide?

For Furo[3,2-b]pyridine 4-oxide, Upstream Products: Furo[3,2-b]pyridine; Downstream Products: Ethyl furo[3,2-b]pyridine-5-carboxylate, 7-Chlorofuro[3,2-b]pyridine, Furo[3,2-b]pyridine-5-carboxylic acid.

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. "Furo[3,2-b]pyridine 4-oxide (CAS 181526-18-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1509174-4 (accessed 2026-11-09).

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