4-Phenylpyridine
Also known as: 4-Aza-1,1'-biphenyl, 4-Azabiphenyl, 4-Pyridylbenzene, p-Phenylpyridine, γ-Phenylpyridine, Pyridine, 4-phenyl-
4-Phenylpyridine (CAS 939-23-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H9N and a molecular weight of 155.196 g/mol. Key properties include a melting point of 69-73 °C(lit.), a boiling point of 281.0±0.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 111.1±11.4 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 939-23-1
- Jingsj CID
- J-1137156-5
- Molecular Formula
- C11H9N
- Molecular Weight
- 155.196 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 69-73 °C(lit.) |
|---|---|
| Boiling Point | 281.0±0.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 111.1±11.4 °C |
| Exact Mass | 155.073502 |
| PSA | 12.89000 |
| LogP | 2.59 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.576 |
| Additional Property | SOLUBLE |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
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 4-Phenylpyridine?
The CAS number of 4-Phenylpyridine is 939-23-1.
What are the molecular formula and molecular weight of 4-Phenylpyridine?
4-Phenylpyridine has molecular formula C11H9N and molecular weight 155.196 g/mol.
Is 4-Phenylpyridine hazardous?
4-Phenylpyridine has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 4-Phenylpyridine?
For 4-Phenylpyridine, Upstream Products: 4-chloropyridine, Phenylboronic acid, Iodobenzene; Downstream Products: 4-Phenylpyridin-2-amine, 4-(4-Bromophenyl)pyridine, 4-Phenylpiperidine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Phenylpyridine (CAS 939-23-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1137156-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.