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Caffeic acid

Name: Caffeic acid
Brand: SIAL
Price: 146 USD
Availability: InStock

suitable for matrix substance for MALDI-MS, ≥99.0% (HPLC)

Synonym(s):

3,4-Dihydroxybenzeneacrylic acid, 3,4-Dihydroxycinnamic acid, 3-(3,4-Dihydroxyphenyl)-2-propenoic acid

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Size/SKU	Availability	Price
1 g	Estimated to ship onSeptember 08, 2026fromMILWAUKEE	$146.00

About This Item

Linear Formula:

(HO)₂C₆H₃CH=CHCO₂H

CAS Number:

331-39-5

Molecular Weight:

180.16

UNSPSC Code:

41115710

NACRES:

NA.21

PubChem Substance ID:

329758737

EC Number:

206-361-2

Beilstein/REAXYS Number:

1954563

MDL number:

MFCD00004392

Assay:

≥99.0% (HPLC)

Form:

powder

$146.00

Estimated to ship onSeptember 08, 2026Details

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Properties

Quality Segment

100

assay

≥99.0% (HPLC)

form

powder

analyte chemical class(es)

peptides, proteins

technique(s)

MALDI-MS: suitable

color

slightly beige

mp

211-213 °C (dec.) (lit.)

cation traces

Ba: ≤5 mg/kg, Ca: ≤20 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤20 mg/kg, K: ≤50 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Na: ≤50 mg/kg, Ni: ≤20 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg

suitability

in accordance for UV test, suitable for matrix substance for MALDI-MS

SMILES string

OC(=O)\C=C\c1ccc(O)c(O)c1

InChI

1S/C9H8O4/c10-7-3-1-6(5-8(7)11)2-4-9(12)13/h1-5,10-11H,(H,12,13)/b4-2+

InChI key

QAIPRVGONGVQAS-DUXPYHPUSA-N

Description

General description

Caffeic acid is an antioxidant and the major hydroxycinnamic acid present in wine. It contains a catechol group with an α,β-unsaturated carboxylic acid chain with hepatoprotective properties.

Application

Caffeic acid may be used as an electrocatalysis mediator in voltammetric determination of cysteamine (CA) in an aqueous buffer solution.

Biochem/physiol Actions

A natural dietary phenolic compound found in plants that is an anti-oxidant. Inhibits the synthesis of leukotrienes that are involved in immunoregulation, inflammation and allergy. Inhibits Cu²⁺-induced LDL oxidation.

Anti-oxidant phenolic compound found in plants; Inhibits the synthesis of leukotrienes.

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1 of 1

This Item	706337	C3878	65969
Supelco 60018 Caffeic acid	Sigma-Aldrich 706337 Caffeic acid-¹³C₉	Sigma-Aldrich C3878 Chlorogenic acid	Sigma-Aldrich 65969 4-O-Caffeoylquinic acid
description suitable for matrix substance for MALDI-MS, ≥99.0% (HPLC)	description 99 atom % ¹³C, 97% (CP)	description ≥95% (titration)	description ≥98.0%
assay ≥99.0% (HPLC)	assay 97% (CP)	assay ≥95% (titration)	assay ≥98.0%
form powder	form powder	form powder	form powder or crystals
Quality Level 100	Quality Level -	Quality Level 200	Quality Level 100
technique(s) MALDI-MS: suitable	technique(s) mass spectrometry (MS): suitable	technique(s) -	technique(s) -
color slightly beige	color -	color -	color -
mp 211-213 °C (dec.) (lit.)	mp 211-213 °C (dec.)	mp 210 °C (dec.) (lit.)	mp -

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pictograms

GHS08

signalword

Warning

hcodes

H351

pcodes

P280

Hazard Classifications

Carc. 2

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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