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Trabectedin Alkaloid

Name: Trabectedin
Brand: Selleck Chemicals
SKU: S7758
Availability: InStock
Rating: 5 (4 reviews)

Cat.No.S7758

Trabectedin (Ecteinascidin 743, ET-743) is a marine alkaloid isolated from the Caribbean tunicate Ecteinascidia turbinata with antitumour activity. Trabectedin binds to the N2 of guanine in the minor groove, causing DNA damage and affecting transcription regulation in a promoter- and gene-specific manner.

Chemical Structure

Molecular Weight: 761.84

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Quality Control

Batch: Purity: 99.92%

99.92

Related Targets	HDAC PARP ATM/ATR DNA-PK WRN DNA/RNA Synthesis Topoisomerase PPAR Sirtuin Casein Kinase
Other Alkylating Agent Inhibitors	Berberine (Umbellatine) MNNG (1-Methyl-3-nitro-1-nitrosoguanidine)

Solubility

In vitro
Batch:

DMSO : 100 mg/mL (131.26 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	5.000mg/ml (6.56mM)	Taking the 1 mL working solution as an example, add 50 μL of 100 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5% DMSO 1 95% Corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	0.310mg/ml (0.41mM)	Taking the 1 mL working solution as an example, add 50 μL of 6.2 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg

Average weight of animals: g

Dosing volume per animal: μL

Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO

% Tween 80

% ddH₂O

% DMSO

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Chemical Information, Storage & Stability

Molecular Weight	761.84	Formula	C₃₉H₄₃N₃O₁₁S	Storage (From the date of receipt)	3 years -20°C powder
CAS No.	114899-77-3	--		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent

Read more about storage stability stock solution CAS number

Mechanism of Action

In vitro	This compound can block EWS-FLI1 transcription factor activity, suppress Werner syndrome protein (WRN) expression and selectively sensitize Ewing sarcoma cells to the DNA-damaging effects of SN38.
In vivo	In Tumor-Bearing Mice, trabectedin does not have an impact on the functional activity of MDSC but does significantly reduce the number of Ly6C^high cells, the most suppressive subset.
References	[1] https://pubmed.ncbi.nlm.nih.gov/24195524/ [2] https://pubmed.ncbi.nlm.nih.gov/20647340/ [3] https://pubmed.ncbi.nlm.nih.gov/24277455/ [4] https://pubmed.ncbi.nlm.nih.gov/23410977/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2026-08-06)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT07444619	RECRUITING	Soft Tissue Sarcomas	M.D. Anderson Cancer Center	2026-06-12	PHASE1
NCT03138161	RECRUITING	Advanced Soft Tissue Sarcoma; Metastatic Soft Tissue Sarcoma	Sarcoma Oncology Research Center, LLC	2017-04-13	PHASE1; PHASE2
NCT03886311	RECRUITING	Sarcoma	Sarcoma Oncology Research Center, LLC	2019-05-15	PHASE2
NCT06524583	RECRUITING	Leiomyosarcoma Uterus	UNICANCER	2025-01-27	PHASE2
NCT04535271	RECRUITING	Leiomyosarcoma	Sarcoma Oncology Research Center, LLC	2021-09-09	PHASE2
NCT02275286	RECRUITING	Liposarcoma, Myxoid; Sarcoma, Soft Tissue; Leiomyosarcoma; Liposarcoma; Pleomorphic Liposarcoma	Grupo Espanol de Investigacion en Sarcomas	2014-11	PHASE1; PHASE2

Tech Support

Handling Instructions

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