5-ethynylpyridin-2(1H)-one

5-乙炔基吡啶-2(1H)-酮

Also known as: 5-ETHYNYLPYRIDIN-2-OL, 2(1H)-Pyridinone, 5-ethynyl-, 5-Ethynyl-2(1H)-pyridinone, 5-ethynyl-1H-pyridin-2-one, 5-ethynylpyridin-2-ol

5-ethynylpyridin-2(1H)-one (CAS 1196156-05-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H5NO and a molecular weight of 119.12100 g/mol. It is also known as 5-ETHYNYLPYRIDIN-2-OL, 2(1H)-Pyridinone, 5-ethynyl- and 5-Ethynyl-2(1H)-pyridinone. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1196156-05-4
Jingsj CID: J-1173096-7
Molecular Formula: C₇H₅NO
Chinese Name: 5-乙炔基吡啶-2(1H)-酮
Molecular Weight: 119.12100 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Frequently Asked Questions

What is the CAS number of 5-ethynylpyridin-2(1H)-one?

The CAS number of 5-ethynylpyridin-2(1H)-one is 1196156-05-4.

What are the molecular formula and molecular weight of 5-ethynylpyridin-2(1H)-one?

5-ethynylpyridin-2(1H)-one has molecular formula C7H5NO and molecular weight 119.12100 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "5-ethynylpyridin-2(1H)-one (CAS 1196156-05-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1173096-7 (accessed 2026-10-25).

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