1-PENTEN-4-YNE

1-戊烯-4-炔

Also known as: 1-Penten-4-yne, 4-penten-1-yne, ALLYL ACETYLENE, CH2=CHCH2C.equiv.CH, pent-1-en-4-yne, pent-4-ene-1-yn

1-PENTEN-4-YNE (CAS 871-28-3) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C5H6 and a molecular weight of 66.10110 g/mol. It is also known as 1-Penten-4-yne, 4-penten-1-yne and ALLYL ACETYLENE. Key properties include a boiling point of 42-43ºC and a density of 0.78 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
871-28-3
Jingsj CID
J-1030471-6
Molecular Formula
C5H6
Chinese Name
1-戊烯-4-炔
Molecular Weight
66.10110 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point42-43ºC
Density0.78 g/cm3

Frequently Asked Questions

What is the CAS number of 1-PENTEN-4-YNE?

The CAS number of 1-PENTEN-4-YNE is 871-28-3.

What are the molecular formula and molecular weight of 1-PENTEN-4-YNE?

1-PENTEN-4-YNE has molecular formula C5H6 and molecular weight 66.10110 g/mol.

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

Last updated:

How to cite: Jingsj. "1-PENTEN-4-YNE (CAS 871-28-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1030471-6 (accessed 2026-10-26).

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