(2E)-3-Phenyl-2-butenoic acid

β-甲基肉桂酸

Also known as: 3-Phenyl-2-butenoic acid, 3-Phenylbut-2-enoic acid, (E)-3-phenylbut-2-enoic acid, beta-Methylcinnamic acid, 3-Phenylcrotonic acid, 2-Butenoic acid, 3-phenyl-, Crotonic acid, 3-phenyl-

(2E)-3-Phenyl-2-butenoic acid (CAS 1199-20-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H10O2 and a molecular weight of 162.185 g/mol. It is also known as 3-Phenyl-2-butenoic acid, 3-Phenylbut-2-enoic acid and (E)-3-phenylbut-2-enoic acid. Key properties include a boiling point of 281.9±10.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 188.2±9.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1199-20-8
Jingsj CID
J-7548-4
Molecular Formula
C10H10O2
Chinese Name
β-甲基肉桂酸
Molecular Weight
162.185 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point281.9±10.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point188.2±9.9 °C

Frequently Asked Questions

What is the CAS number of (2E)-3-Phenyl-2-butenoic acid?

The CAS number of (2E)-3-Phenyl-2-butenoic acid is 1199-20-8.

What are the molecular formula and molecular weight of (2E)-3-Phenyl-2-butenoic acid?

(2E)-3-Phenyl-2-butenoic acid has molecular formula C10H10O2 and molecular weight 162.185 g/mol.

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

Last updated:

How to cite: Jingsj. "(2E)-3-Phenyl-2-butenoic acid (CAS 1199-20-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-7548-4 (accessed 2026-10-23).

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