(E)-4-Hydroxycrotonic acid

Name: (E)-4-Hydroxycrotonic acid
Brand: ChemScene
Availability: InStock
Rating: 5 (1 reviews)

CAS No. 24587-49-3
Cat. No. CS-0020662
Purity95+%
MDL No.MFCD00673880

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Each bottle is packed as an Excepted Quantity, with a maximum of 1g for items in class 6.1 packing group I or II, and up to 25g for all other hazardous materials.

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Type	HazMat Fee
Excepted Quantity	$0.00
FedEx Limited Quantities Ground	$0.00
Hazmat Ground shipping	$50.00+
Inaccessible (Haz class 6.1 or 9), Domestic	$68.00+
Accessible (Haz class 3, 4, 5 or 8), Domestic	$158.00+
Inaccessible (Haz class 6.1 or 9), International	$108.00+
Accessible (Haz class 3, 4, 5 or 8), International	$238.00+

An item is classified as a dangerous good if our website displays Hazardous Material (HazMat) information for it.

There is a HazMat shipping fee for each item that qualifies as a dangerous good. Please contact our quotation team via email to confirm the details.

*For research and further manufacturing use only, not for direct human use.

Structure of 24587-49-3

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Description

(E)-4-Hydroxycrotonic acid features a conjugated enol system stabilized by resonance, enabling direct participation in Michael additions and aldol condensations. This bench-stable, moisture-tolerant reagent integrates readily into synthetic sequences requiring α,β-unsaturated carbonyl motifs.

Application

(E)-4-Hydroxycrotonic acid serves as a versatile building block for synthesizing α,β-unsaturated carbonyl systems and functionalized heterocycles. Its conjugated enol functionality enables reliable Michael additions, aldol condensations, and cyclization reactions under mild conditions. The molecule exhibits good bench stability and facilitates straightforward purification via recrystallization or distillation, making it well-suited for iterative synthetic workflows in medicinal chemistry and natural product synthesis.

General Information

CAS No. 24587-49-3
Cat. No. CS-0020662
Purity 95+%
MDL No. MFCD00673880
Storage 4°C
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₄H₆O₃
Molecular Weight 102.09
Synonym(s) trans-4-Hydroxycrotonic acid; trans-γ-Hydroxycrotonic acid; T‐HCA
SMILES O=C(O)/C=C/CO

Computational Chemistry Data

TPSA 57.53
LogP -0.3805
H_Acceptors 2
H_Donors 2
Rotatable_Bonds 2

Safety Information

Download SDS

GHS Pictogram :	GHS No : GHS07
Signal Word : Warning	UN#: N/A
Class : N/A	Packing Group : N/A
Hazard Statements : H315-H319-H335
Precautionary Statements : P261-P264-P271-P280-P302+P352-P304+P340-P362+P364-P405-P501

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Other Classifications

Building Blocks Functional Group Alcohol

Building Blocks Functional Group Carboxylic Acid

Building Blocks Functional Group Olefins

Building Blocks Skeleton Fatty chain compounds

General Reagents Organic General Reagents

Key Words

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(E)-4-Hydroxycrotonic acid

CAS No. 24587-49-3

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