4-Ethynylpyridine
Also known as: 4-Pyridylacetylene, Pyridine, 4-ethynyl-, (Pyridin-4-yl)acetylene, 4-Pyridylethyne, 4-Pyridinylacetylene
4-Ethynylpyridine (CAS 2510-22-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H5N and a molecular weight of 103.121 g/mol. Key properties include a melting point of 98ºC, a boiling point of 170.5±13.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 57.5±12.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 2510-22-7
- Jingsj CID
- J-43154-9
- Molecular Formula
- C7H5N
- Molecular Weight
- 103.121 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 98ºC |
|---|---|
| Boiling Point | 170.5±13.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 57.5±12.4 °C |
| Exact Mass | 103.042198 |
| PSA | 12.89000 |
| LogP | 0.91 |
| Vapor Pressure | 1.9±0.3 mmHg at 25°C |
| Refractive Index | 1.543 |
| Storage Conditions | Freezer |
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-Ethynylpyridine?
The CAS number of 4-Ethynylpyridine is 2510-22-7.
What are the molecular formula and molecular weight of 4-Ethynylpyridine?
4-Ethynylpyridine has molecular formula C7H5N and molecular weight 103.121 g/mol.
What are the upstream and downstream products of 4-Ethynylpyridine?
For 4-Ethynylpyridine, Upstream Products: 4-((trimethylsilyl)ethynyl)pyridine, 2-methyl-4-(pyridin-4-yl)but-3-yn-2-ol, 4-Pyridinecarboxaldehyde; Downstream Products: 4-Ethylpyridine, 4-Acetylpyridine, 4-(2-phenylethynyl)pyridine.
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-Ethynylpyridine (CAS 2510-22-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-43154-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.