4-Acetamidopyridine

4-乙酰氨基吡啶

Also known as: N-(4-Pyridyl)acetamide, N-(Pyridin-4-yl)acetamide, 4-acetylaminopyridine

4-Acetamidopyridine (CAS 5221-42-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H8N2O and a molecular weight of 136.15100 g/mol. It is also known as N-(4-Pyridyl)acetamide, N-(Pyridin-4-yl)acetamide and 4-acetylaminopyridine. Key properties include a melting point of 152ºC, a boiling point of 344.3ºC at 760mmHg, a density of 1.176g/cm3 and a flash point of 162ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5221-42-1
Jingsj CID
J-1148192-6
Molecular Formula
C7H8N2O
Chinese Name
4-乙酰氨基吡啶
Molecular Weight
136.15100 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point152ºC
Boiling Point344.3ºC at 760mmHg
Density1.176g/cm3
Flash Point162ºC

Frequently Asked Questions

What is the CAS number of 4-Acetamidopyridine?

The CAS number of 4-Acetamidopyridine is 5221-42-1.

What are the molecular formula and molecular weight of 4-Acetamidopyridine?

4-Acetamidopyridine has molecular formula C7H8N2O and molecular weight 136.15100 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "4-Acetamidopyridine (CAS 5221-42-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1148192-6 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.