4-(2-pyridin-4-ylethynyl)pyridine

Also known as: 1,2-di(pyridin-4-yl)ethyne, 1,2-bis(4-pyridyl)acetylene, 1,2-bis(4-pyridyl)ethyne, 1,2-(4'-dipyridyl)acetylene, 4,4'-(1,2-ethynediyl)bis(pyridine)

4-(2-pyridin-4-ylethynyl)pyridine (CAS 73564-69-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H8N2 and a molecular weight of 180.20500 g/mol. Key properties include a boiling point of 350.9ºC at 760mmHg, a density of 1.18g/cm3 and a flash point of 155.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 73564-69-9
Jingsj CID: J-932035-8
Molecular Formula: C₁₂H₈N₂
Molecular Weight: 180.20500 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	350.9ºC at 760mmHg
Density	1.18g/cm3
Flash Point	155.1ºC
Exact Mass	180.06900
PSA	25.78000
LogP	1.87640

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-(2-pyridin-4-ylethynyl)pyridine?

The CAS number of 4-(2-pyridin-4-ylethynyl)pyridine is 73564-69-9.

What are the molecular formula and molecular weight of 4-(2-pyridin-4-ylethynyl)pyridine?

4-(2-pyridin-4-ylethynyl)pyridine has molecular formula C12H8N2 and molecular weight 180.20500 g/mol.

What are the upstream and downstream products of 4-(2-pyridin-4-ylethynyl)pyridine?

For 4-(2-pyridin-4-ylethynyl)pyridine, Upstream Products: 4-Ethynylpyridine, 4-Iodopyridine, 4-Bromopyridine hydrochloride; Downstream Products: 2,3,4,5-Tetra(4-pyridyl)thiophene.

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. "4-(2-pyridin-4-ylethynyl)pyridine (CAS 73564-69-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-932035-8 (accessed 2026-11-09).

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