3,5-dibromopyridine 1-oxide

Also known as: 3,5-dibromopyridine N-oxide, 3,5-Dibromopyridine-1-oxide, 3,5-dibromopyridine-N-oxide, AURORA KA-3005, MFCD00160750, Pyridine, 3,5-dibromo-, 1-oxide, 3,5-dibromo-1-oxidopyridin-1-ium

3,5-dibromopyridine 1-oxide (CAS 2402-99-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H3Br2NO and a molecular weight of 252.891 g/mol. Key properties include a melting point of 134-144ºC, a boiling point of 387.1±22.0 °C at 760 mmHg, a density of 2.2±0.1 g/cm3 and a flash point of 187.9±22.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2402-99-5
Jingsj CID: J-29442-8
Molecular Formula: C₅H₃Br₂NO
Molecular Weight: 252.891 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	134-144ºC
Boiling Point	387.1±22.0 °C at 760 mmHg
Density	2.2±0.1 g/cm3
Flash Point	187.9±22.3 °C
Exact Mass	250.858124
PSA	25.46000
LogP	0.29
Vapor Pressure	0.0±0.9 mmHg at 25°C
Refractive Index	1.652

Customs & Trade Information

HS Code	2933399090
Summary	2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. 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 3,5-dibromopyridine 1-oxide?

The CAS number of 3,5-dibromopyridine 1-oxide is 2402-99-5.

What are the molecular formula and molecular weight of 3,5-dibromopyridine 1-oxide?

3,5-dibromopyridine 1-oxide has molecular formula C5H3Br2NO and molecular weight 252.891 g/mol.

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. "3,5-dibromopyridine 1-oxide (CAS 2402-99-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-29442-8 (accessed 2026-11-09).

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