1. Metabolic Enzyme/Protease
  2. Cytochrome P450
  3. Methoxsalen

Methoxsalen  (Synonyms: 8-Methoxypsoralen; Xanthotoxin; 8-MOP)

Cat. No.: HY-30151 Purity: 99.98%
COA Handling Instructions

Methoxsalen (8-Methoxypsoralen) is a furanocoumarin compound used in psoralen, used in studies of psoriasis, eczema, vitiligo and some sun-exposed cutaneous lymphomas, and is a P450 inhibitor.

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

Methoxsalen Chemical Structure

Methoxsalen Chemical Structure

CAS No. : 298-81-7

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Solid + Solvent
10 mM * 1 mL in DMSO
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Solid
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1 g USD 79 In-stock
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Customer Review

Based on 12 publication(s) in Google Scholar

Other Forms of Methoxsalen:

Top Publications Citing Use of Products
  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review

Description

Methoxsalen (8-Methoxypsoralen) is a furanocoumarin compound used in psoralen, used in studies of psoriasis, eczema, vitiligo and some sun-exposed cutaneous lymphomas, and is a P450 inhibitor.

In Vivo

Methoxsalen (15mg/kg, i.p, single dose) increases nicotine’s Cmax prolongs the plasma nicotine half-life (fourfold increase), decreases its clearance (sixfold decrease), and increases its AUC[1].
Methoxsalen (15mg/kg, i.p, single dose) enhances the potency of pharmacological effects of oral nicotine (i.e., body temperature and analgesia)[1].

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

Animal Model: Male adult ICR mice[1]
Dosage: 15 mg/kg
Administration: Intraperitoneal injection (i.p.), single dose
Result: Increased nicotine plasma levels were still above 10ng/ml at 6hr.
Induced nicotine’s antinociceptive and hypothermic lasted close to 6 and 24 hr.
Clinical Trial
Molecular Weight

216.19

Formula

C12H8O4

CAS No.
Appearance

Solid

Color

White to light yellow

SMILES

O=C1OC(C(C=C1)=C2)=C(OC)C3=C2C=CO3

Structure Classification
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
Solvent & Solubility
In Vitro: 

DMSO : 50 mg/mL (231.28 mM; ultrasonic and warming and heat to 60°C; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H2O : < 0.1 mg/mL (insoluble)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 4.6256 mL 23.1278 mL 46.2556 mL
5 mM 0.9251 mL 4.6256 mL 9.2511 mL
View the Complete Stock Solution Preparation Table

* 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

  • Dilution Calculator

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

Mass
=
Concentration
×
Volume
×
Molecular Weight *

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

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

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: ≥ 2.5 mg/mL (11.56 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 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.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

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

    Solubility: ≥ 2.5 mg/mL (11.56 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 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 (25.0 mg/mL) to 900 μL Corn oil, and mix evenly.

In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation

Purity: 99.98%

References

Complete Stock Solution Preparation Table

* 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.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 4.6256 mL 23.1278 mL 46.2556 mL 115.6390 mL
5 mM 0.9251 mL 4.6256 mL 9.2511 mL 23.1278 mL
10 mM 0.4626 mL 2.3128 mL 4.6256 mL 11.5639 mL
15 mM 0.3084 mL 1.5419 mL 3.0837 mL 7.7093 mL
20 mM 0.2313 mL 1.1564 mL 2.3128 mL 5.7820 mL
25 mM 0.1850 mL 0.9251 mL 1.8502 mL 4.6256 mL
30 mM 0.1542 mL 0.7709 mL 1.5419 mL 3.8546 mL
40 mM 0.1156 mL 0.5782 mL 1.1564 mL 2.8910 mL
50 mM 0.0925 mL 0.4626 mL 0.9251 mL 2.3128 mL
60 mM 0.0771 mL 0.3855 mL 0.7709 mL 1.9273 mL
80 mM 0.0578 mL 0.2891 mL 0.5782 mL 1.4455 mL
100 mM 0.0463 mL 0.2313 mL 0.4626 mL 1.1564 mL
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Methoxsalen Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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