(2E)-4-Phenyl-2-pentenoic acid

(E)-4-苯基-2-戊烯酸

Also known as: 2-Pentenoic acid, 4-phenyl-, (2E)-, (E)-4-Phenyl-pent-2-enoic acid, 4-phenylpent-2-enoic acid, (2E)-4-phenylpent-2-enoic acid, (E)-4-Phenyl-2-pentenoic acid

(2E)-4-Phenyl-2-pentenoic acid (CAS 103986-66-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H12O2 and a molecular weight of 176.21200 g/mol. It is also known as 2-Pentenoic acid, 4-phenyl-, (2E)-, (E)-4-Phenyl-pent-2-enoic acid and 4-phenylpent-2-enoic acid. Key properties include a boiling point of 326.1ºC at 760 mmHg, a density of 1.096g/cm3 and a flash point of 230.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
103986-66-9
Jingsj CID
J-1024302-2
Molecular Formula
C11H12O2
Chinese Name
(E)-4-苯基-2-戊烯酸
Molecular Weight
176.21200 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point326.1ºC at 760 mmHg
Density1.096g/cm3
Flash Point230.1ºC

Frequently Asked Questions

What is the CAS number of (2E)-4-Phenyl-2-pentenoic acid?

The CAS number of (2E)-4-Phenyl-2-pentenoic acid is 103986-66-9.

What are the molecular formula and molecular weight of (2E)-4-Phenyl-2-pentenoic acid?

(2E)-4-Phenyl-2-pentenoic acid has molecular formula C11H12O2 and molecular weight 176.21200 g/mol.

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

Last updated:

How to cite: Jingsj. "(2E)-4-Phenyl-2-pentenoic acid (CAS 103986-66-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1024302-2 (accessed 2026-10-23).

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