1. Antibody-drug Conjugate/ADC Related
  2. ADC Cytotoxin
  3. 10-Methoxycamptothecin

10-Methoxycamptothecin is a natural bioactive derivative of camptothecin (CPT) isolated from Camptotheca acuminata, and has been confirmed to possess high anti-cancer properties. 10-Methoxycamptothecin has higher cytotoxicity than 10-hydroxycamptothecin by testing antitumor activity against 2774 cell lines.

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

10-Methoxycamptothecin Chemical Structure

10-Methoxycamptothecin Chemical Structure

CAS No. : 19685-10-0

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5 mg USD 120 In-stock
10 mg USD 190 In-stock
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Based on 1 publication(s) in Google Scholar

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  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review

Description

10-Methoxycamptothecin is a natural bioactive derivative of camptothecin (CPT) isolated from Camptotheca acuminata, and has been confirmed to possess high anti-cancer properties. 10-Methoxycamptothecin has higher cytotoxicity than 10-hydroxycamptothecin by testing antitumor activity against 2774 cell lines[1].

Cellular Effect
Cell Line Type Value Description References
A549 IC50
0.04 μM
Compound: 19, CPT-OMe
Antitumor activity against human A549/ATCC cells by SRB method
Antitumor activity against human A549/ATCC cells by SRB method
[PMID: 19541483]
HT-29 IC50
0.076 μM
Compound: 19, CPT-OMe
Antitumor activity against human HT-29 cells by SRB method
Antitumor activity against human HT-29 cells by SRB method
[PMID: 19541483]
Molecular Weight

378.38

Formula

C21H18N2O5

CAS No.
Appearance

Solid

Color

White to yellow

SMILES

O=C1[C@](O)(CC)C2=C(CO1)C(N3CC4=CC5=CC(OC)=CC=C5N=C4C3=C2)=O

Structure Classification
Initial Source
Shipping

Room temperature in continental US; may vary elsewhere.

Storage

4°C, protect from light

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

Solvent & Solubility
In Vitro: 

DMSO : 8.33 mg/mL (22.01 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.6428 mL 13.2142 mL 26.4285 mL
5 mM 0.5286 mL 2.6428 mL 5.2857 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, 6 months; -20°C, 1 month (protect from light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

  • Molarity Calculator

  • Dilution Calculator

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

Mass
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Concentration
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Volume
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Molecular Weight *

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

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Volume (start)

V1

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Concentration (final)

C2

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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: 0.83 mg/mL (2.19 mM); Suspended solution; Need ultrasonic

    This protocol yields a suspended solution of 0.83 mg/mL. Suspended solution can be used for oral and intraperitoneal injection.

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (8.3 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% (20% SBE-β-CD in Saline)

    Solubility: ≥ 0.83 mg/mL (2.19 mM); Clear solution

    This protocol yields a clear solution of ≥ 0.83 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (8.3 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
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).

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

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: 99.03%

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, 6 months; -20°C, 1 month (protect from light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.6428 mL 13.2142 mL 26.4285 mL 66.0711 mL
5 mM 0.5286 mL 2.6428 mL 5.2857 mL 13.2142 mL
10 mM 0.2643 mL 1.3214 mL 2.6428 mL 6.6071 mL
15 mM 0.1762 mL 0.8809 mL 1.7619 mL 4.4047 mL
20 mM 0.1321 mL 0.6607 mL 1.3214 mL 3.3036 mL
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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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Product Name:
10-Methoxycamptothecin
Cat. No.:
HY-N0446
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