(E)-4-Hydroxybut-2-enoic acid

Also known as: (E)-4-Hydroxy-2-butenoic acid, (E)-4-Hydroxycrotonic acid, 4-Hydroxy-but-2-enoic acid, trans-4-Hydroxy-2-butenoic acid, trans-4-Hydroxycrotonic acid, trans-gamma-Hydroxycrotonic acid, RARECHEM AK ML 0533

(E)-4-Hydroxybut-2-enoic acid (CAS 24587-49-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H6O3 and a molecular weight of 102.08900 g/mol. Key properties include a boiling point of 338.7ºC at 760 mmHg and a flash point of 172.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 24587-49-3
Jingsj CID: J-1493930-1
Molecular Formula: C₄H₆O₃
Molecular Weight: 102.08900 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	338.7ºC at 760 mmHg
Flash Point	172.9ºC
Exact Mass	102.03200
PSA	57.53000
Vapor Pressure	6.49E-06mmHg at 25°C
Storage Conditions	2-8°C

Customs & Trade Information

HS Code	2918199090
Summary	2918199090 other carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of (E)-4-Hydroxybut-2-enoic acid?

The CAS number of (E)-4-Hydroxybut-2-enoic acid is 24587-49-3.

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

(E)-4-Hydroxybut-2-enoic acid has molecular formula C4H6O3 and molecular weight 102.08900 g/mol.

What are the upstream and downstream products of (E)-4-Hydroxybut-2-enoic acid?

For (E)-4-Hydroxybut-2-enoic acid, Upstream Products: Ethyl 4-bromocrotonate, 4-Bromocrotonic acid, Ethyl (S)-4-chloro-3-hydroxybutyrate.

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

Last updated: 8/21/2026

How to cite: Jingsj. "(E)-4-Hydroxybut-2-enoic acid (CAS 24587-49-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1493930-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.