T6137 Sigma


≥98% (HPLC), powder

Synonym: 2,5,9-Trimethylfuro[3,2-g]benzopyran-7-one, 4,5′,8-Trimethylpsoralen, TMP, Trisoralen



Related Categories Apoptosis and Cell Cycle, Approved Therapeutics/Drug Candidates, Bioactive Small Molecule Alphabetical Index, Bioactive Small Molecules, Biochemicals and Reagents,
assay   ≥98% (HPLC)
form   powder
color   white
mp   229-231 °C(lit.)
solubility   chloroform: soluble50  mg/mL, clear, colorless to faintly yellow
fluorescence   λex 269 nm; λem 445 nm in methanol
  λex 321 nm; λem 445 nm (bound to DNA in Tris, pH 8.1)
originator   Valeant
storage temp.   −20°C



1 g in glass bottle

100, 500 mg in glass bottle

Preparation Note

Trioxsalen is soluble in chloroform at 50 mg/ml and yields a clear, colorless to faint yellow solution.


Trioxsalen has been used for mutagenesis of N2 worms4,5.

Biochem/physiol Actions

Photochemical crosslinker of DNA that has been used as a probe for nucleic acid structure and function. Trioxsalen has also been used to crosslink DNA onto mica surfaces.

Features and Benefits

This compound is a featured product for Apoptosis research. Click here to discover more featured Apoptosis products. Learn more about bioactive small molecules for other areas of research at

This compound was developed by Valeant. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.

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Flow Cytometry Instruments

All labs need water
Safety & Documentation

Safety Information

Signal word 
Hazard statements 
Precautionary statements 
UN 1759 8 / PGII
WGK Germany 


Certificate of Analysis

Certificate of Origin

Protocols & Articles


DNA Damage and Repair

Damage to cellular DNA is involved in mutagenesis and the development of cancer. The DNA in a human cell undergoes several thousand to a million damaging events per day, generated by both external (e...
Keywords: AGE, Alkylations, Apoptosis, Biochemistry, Cancer, Carcinogens, Catalysis, Clinical, DNA replication, Deaminations, Degradations, Eliminations, Environmental, Enzymology, Gene expression, Genetic, Infrared spectroscopy, Metabolites, Methylations, Mutagens, Oncology, Oxidations, Polymorphisms, Rearrangements, Recombination, Substitutions, Transcription, transformation

Discover Bioactive Small Molecules for Apoptosis

Apoptosis, or programmed cell death (PCD), is a selective process for the removal of unnecessary, infected or transformed cells in various biological systems. As it plays a role in the homeostasis of...
Keywords: Apoptosis, Bioactive small molecules, Cancer, Clinical, Diseases, Ligands, Neurodegenerative Diseases

Discover Bioactive Small Molecules for Cell Cycle Research

In proliferating cells, the cell cycle consists of four phases. Gap 1 (G1) is the interval between mitosis and DNA replication that is characterized by cell growth. Replication of DNA occurs during t...
Keywords: Apoptosis, Bioactive small molecules, Cancer, Cell division, Cell proliferation, DNA replication, Diseases, Genetic

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