Cat. No.: HY-N1881

4',5-Dihydroxyflavone

3 Cited Publications

Customer Review

Based on 3 publication(s) in Google Scholar

4',5-Dihydroxyflavone (Compound 2c; Compound B3) is a type of flavonoid compound. 4',5-Dihydroxyflavone can inhibit various oxidases and its IC₅₀ values for collagenase A (ColA) and α-glucosidase are less than 1 μM and 66 μM respectively; for soybean lipoxygenase-1 (LOX-1), its K_i value is 102.6 μM. 4',5-Dihydroxyflavone can be used in studies on anti-toxicity and anti-diabetes.

For research use only. We do not sell to patients.

Purity: 99.95%
CAS No.: 6665-67-4
Formula: C₁₅H₁₀O₄
Molecular Weight:254.24

Storage:

Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 2 years , -20°C, 1 year

4',5-Dihydroxyflavone Chemical Structure

CAS No.: 6665-67-4

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Biological Activity
- Description
- IC₅₀ & Target
- Cellular Effect
- In Vitro
Chemical Information
Publications (3)
Solvent & Solubility
- In Vitro
- In Vivo
Purity & Documentation
References
Help & FAQs
Classifications
Bioz

Biological Activity

Description

IC₅₀ & Target

Ki: 102.6 μM (LOX-1)^[1].
IC50: 66 μM (α-glucosidase)^[2].

All Lipoxygenase Isoforms :

Cellular Effect

Cell Line	Type	Value	Description	References
Neutrophil	IC₅₀	18 μM Compound: 2c	Inhibition of oxidative burst in PMA-stimulated human neutrophils assessed as inhibition of ROS-induced luminol oxidation incubated for 5 mins prior to PMA challenge by chemiluminescence assay Inhibition of oxidative burst in PMA-stimulated human neutrophils assessed as inhibition of ROS-induced luminol oxidation incubated for 5 mins prior to PMA challenge by chemiluminescence assay	[PMID: 23871908]
Neutrophil	IC₅₀	67.8 μM Compound: 2c	Inhibition of oxidative burst in PMA-stimulated human neutrophils assessed as inhibition of superoxide anion radical-induced lucigenin oxidation incubated for 5 mins prior to PMA challenge by chemiluminescence assay Inhibition of oxidative burst in PMA-stimulated human neutrophils assessed as inhibition of superoxide anion radical-induced lucigenin oxidation incubated for 5 mins prior to PMA challenge by chemiluminescence assay	[PMID: 23871908]

In Vitro

4',5-Dihydroxyflavone is a potent inhibitor of ColA, which is a crucial bacterial virulence factor. It helps bacteria spread by degrading host collagen proteins^[3].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Chemical Information

CAS No. 6665-67-4
Appearance Solid
Molecular Weight 254.24
Formula C₁₅H₁₀O₄
Color Light yellow to yellow
SMILES

O=C1C=C(C2=CC=C(O)C=C2)OC3=CC=CC(O)=C13
Structure Classification
- Flavonoids
- Flavones
- Phenols
- Polyphenols
Initial Source
Shipping

Room temperature in continental US; may vary elsewhere.

Storage

Powder	-20°C	3 years
	4°C	2 years
In solvent	-80°C	2 years
	-20°C	1 year

Publications (3)

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Journal Impact Factor

J Adv Res

Scutellarein attenuates cancer cachexia-induced muscle atrophy via targeted inhibition of the JAK/STAT pathway. [Abstract]

2026 Apr:82:1083-1098. PMID: 40617409
Food Chem

Effects of sun drying combined with baking processes on the flavor quality of Chongqing Tuocha raw tea. [Abstract]

2025 Dec 30:497:146992. PMID: 41285060
Food Chem

Flavonoid-mediated metabolic underpinning quality variation in red bud-sport pear mutants. [Abstract]

2025 Oct 15:489:144992. PMID: 40466530

Solvent & Solubility

In Vitro:

DMSO : 100 mg/mL (393.33 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

View the Complete Stock Solution Preparation Table

Preparing Stock Solutions

View the Complete Stock Solution Preparation Table

Concentration Solvent Mass

1 mg

5 mg

10 mg

Concentration

Solvent

Mass

1 mM

3.9333 mL

19.6665 mL

39.3329 mL

5 mM

0.7867 mL

3.9333 mL

7.8666 mL

10 mM

0.3933 mL

1.9666 mL

3.9333 mL

Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.

Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Molarity Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass Mass

Concentration Concentration

Volume Volume

Molecular Weight Molecular Weight

Dilution Calculator

Concentration _(start) × Volume _(start) = Concentration _(final) × Volume _(final)

Concentration _(start) Concentration _(start)

Volume _(start) Volume _(start)

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In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

Stock Solution Working Solution

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for In Vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

Protocol 1

Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline

Solubility: ≥ 2.58 mg/mL (10.15 mM); Clear solution

This protocol yields a clear solution of ≥ 2.58 mg/mL (saturation unknown).

Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.8 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

Protocol 2

Add each solvent one by one: 10% DMSO 90% Corn Oil

Solubility: ≥ 2.58 mg/mL (10.15 mM); Clear solution

This protocol yields a clear solution of ≥ 2.58 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.

Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.8 mg/mL) to 900 μL Corn oil, and mix evenly.

In Vivo Dissolution Calculator

Please enter the basic information of animal experiments:

Dosage Dosage
mg/kg
Animal Weight (Per Animal) Animal Weight (Per Animal)
g
Dosing Volume (Per Animal) Dosing Volume (Per Animal)
μL
Number of Animals Number of Animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.

Please enter your animal formula composition:

%
DMSO +

Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
%
+
+
%
Tween-80 + +
%
Saline +

The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).

Working solution concentration: 0.22 mg/mL

Purity & Documentation

Select Batch:

Purity: 99.98%

Assay: 99.98%

ee.: 99.98%

Data Sheet (274 KB)
SDS (251 KB)
- English - EN (251 KB)
- Français - FR (251 KB)
- Deutsch - DE (251 KB)
- Norwegian - NO (251 KB)
- Español - ES (251 KB)
- Swedish - SV (251 KB)
- Italian - IT (251 KB)
- Korean - KR (251 KB)
- Portuguese - PT (251 KB)
COA (2659 KB)
Elemental Analysis Report (2659 KB)
HNMR (2659 KB)
CNMR (2659 KB)
RP-HPLC (2659 KB)
NP-HPLC (2659 KB)
MS (2659 KB)
LCMS (2659 KB)
IR (2659 KB)
GC (2659 KB)
OR (2659 KB)
SDS-PAGE (2659 KB)
SEC-HPLC (2659 KB)
Other Report (2659 KB)
Handling Instructions (2659 KB)

References

[1]. Ribeiro D, et al. Inhibition of LOX by flavonoids: a structure-activity relationship study. Eur J Med Chem. 2014 Jan 24;72:137-45. [Content Brief]

[2]. Proença C, et al. α-Glucosidase inhibition by flavonoids: an in vitro and in silico structure-activity relationship study. J Enzyme Inhib Med Chem. 2017 Dec;32(1):1216-1228. [Content Brief]

Help & FAQs

How should lyophilized recombinant proteins be reconstituted and stored?

1. Before opening the cap, centrifuge the vial at 13000 rpm for 20-30 seconds. This step will ensure that any lyophilized powder that may have adhered to the cap or walls is collected at the bottom of the vial, minimizing the risk of product loss.

Complete Stock Solution Preparation Table

Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent	Concentration Solvent Mass	1 mg	5 mg	10 mg	25 mg
DMSO	1 mM	3.9333 mL	19.6665 mL	39.3329 mL	98.3323 mL
	5 mM	0.7867 mL	3.9333 mL	7.8666 mL	19.6665 mL
	10 mM	0.3933 mL	1.9666 mL	3.9333 mL	9.8332 mL
	15 mM	0.2622 mL	1.3111 mL	2.6222 mL	6.5555 mL
	20 mM	0.1967 mL	0.9833 mL	1.9666 mL	4.9166 mL
	25 mM	0.1573 mL	0.7867 mL	1.5733 mL	3.9333 mL
	30 mM	0.1311 mL	0.6555 mL	1.3111 mL	3.2777 mL
	40 mM	0.0983 mL	0.4917 mL	0.9833 mL	2.4583 mL
	50 mM	0.0787 mL	0.3933 mL	0.7867 mL	1.9666 mL
	60 mM	0.0656 mL	0.3278 mL	0.6555 mL	1.6389 mL
	80 mM	0.0492 mL	0.2458 mL	0.4917 mL	1.2292 mL
	100 mM	0.0393 mL	0.1967 mL	0.3933 mL	0.9833 mL

Keywords

4',5-Dihydroxyflavone

3 Cited Publications

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4',5-Dihydroxyflavone

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Publications Citing Use of MedChemExpress (MCE) 4',5-Dihydroxyflavone

All Lipoxygenase Isoforms

Biological Activity

Chemical Information

Publications (3)

Solvent & Solubility

Purity & Documentation

References

Help & FAQs

Complete Stock Solution Preparation Table

4',5-Dihydroxyflavone Related Classifications

HY-N1881 Related Classifications