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5-Bromo-2-methylpyridine 1-oxide

Also known as: 5-Bromo-2-methylpyridine N-oxide, 2-Methyl-5-bromopyridine-N-oxide, 5-Bromo-2-methyl-1-oxidopyridin-1-ium, 5-Bromo-2-methylpyridine-1-oxide, 5-Bromo-2-picoline N-oxide, Pyridine, 5-bromo-2-methyl-, 1-oxide, SPECS AC-907/25004519, RSYY(Avanafil)-52

5-Bromo-2-methylpyridine 1-oxide (CAS 31181-64-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H6BrNO and a molecular weight of 188.022 g/mol. Key properties include a melting point of 119.5-120.1 °C, a boiling point of 345.7±22.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 162.9±22.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
31181-64-3
Jingsj CID
J-1082759-5
Molecular Formula
C6H6BrNO
Molecular Weight
188.022 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point119.5-120.1 °C
Boiling Point345.7±22.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point162.9±22.3 °C
Exact Mass186.963272
PSA25.46000
LogP0.03
Vapor Pressure0.0±0.7 mmHg at 25°C
Refractive Index1.577

Customs & Trade Information

HS Code2933399090
Summary2933399090. 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 5-Bromo-2-methylpyridine 1-oxide?

The CAS number of 5-Bromo-2-methylpyridine 1-oxide is 31181-64-3.

What are the molecular formula and molecular weight of 5-Bromo-2-methylpyridine 1-oxide?

5-Bromo-2-methylpyridine 1-oxide has molecular formula C6H6BrNO and molecular weight 188.022 g/mol.

What are the upstream and downstream products of 5-Bromo-2-methylpyridine 1-oxide?

For 5-Bromo-2-methylpyridine 1-oxide, Upstream Products: 5-Bromo-2-methylpyridine, 2-Methylpyridine; Downstream Products: 5-bromo-4-chloropicolinic acid, Methyl trifluoroacetate, 5-Bromopyridine-2-carbaldehyde.

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-Bromo-2-methylpyridine 1-oxide (CAS 31181-64-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1082759-5 (accessed 2026-11-09).

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