2-Phenylpyridine 1-oxide
Also known as: 2-Phenylpyridine 1-oxide, 2-Phenylpyridine N-oxide, 2-phenylpyridine oxide, 1-oxido-2-phenylpyridin-1-ium, 1-oxido-2-phenyl-pyridin-1-ium, Pyridine, 2-phenyl-, 1-oxide, Sparsentan Impurity 5
2-Phenylpyridine 1-oxide (CAS 1131-33-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H9NO and a molecular weight of 171.19500 g/mol. Key properties include a melting point of 159 °C, a boiling point of 400.8ºC at 760mmHg, a density of 1.06g/cm3 and a flash point of 196.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1131-33-5
- Jingsj CID
- J-12540-6
- Molecular Formula
- C11H9NO
- Molecular Weight
- 171.19500 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 159 °C |
|---|---|
| Boiling Point | 400.8ºC at 760mmHg |
| Density | 1.06g/cm3 |
| Flash Point | 196.2ºC |
| Exact Mass | 171.06800 |
| PSA | 25.46000 |
| LogP | 2.78210 |
| Vapor Pressure | 2.86E-06mmHg at 25°C |
| Refractive Index | 1.573 |
| Storage Conditions | 2-8℃ |
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 2-Phenylpyridine 1-oxide?
The CAS number of 2-Phenylpyridine 1-oxide is 1131-33-5.
What are the molecular formula and molecular weight of 2-Phenylpyridine 1-oxide?
2-Phenylpyridine 1-oxide has molecular formula C11H9NO and molecular weight 171.19500 g/mol.
What are the upstream and downstream products of 2-Phenylpyridine 1-oxide?
For 2-Phenylpyridine 1-oxide, Upstream Products: Pyridine N-oxide, Iodobenzene, 2-Phenylpyridine; Downstream Products: 4-Chloro-2-phenylpyridine, 2-Chloro-6-phenylpyridine, 6-Phenylpyridine-2-carboxylic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Phenylpyridine 1-oxide (CAS 1131-33-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-12540-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.