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SML1131 Sigma-Aldrich

Fosbretabulin disodium

≥98% (HPLC)

Synonym: 2-Methoxy-5-[(1Z)-2-(3,4,5-trimethoxyphenyl)ethenyl]phenyl disodium phosphate, CA4P, Combretastatin A4 phosphate disodium



Related Categories Apoptosis Inducers, Apoptosis and Cell Cycle, Bioactive Small Molecule Alphabetical Index, Bioactive Small Molecules, Cell Biology,
assay   ≥98% (HPLC)
form   powder
color   white to beige
solubility   H2O: 5 mg/mL, clear
storage temp.   −20°C
SMILES string   [O-]P(OC1=CC(/C=C\C2=CC(OC)=C(OC)C(OC)=C2)=CC=C1OC)([O-])=O.[Na+].[Na+]
InChI   1S/C18H21O8P.2Na/c1-22-14-8-7-12(9-15(14)26-27(19,20)21)5-6-13-10-16(23-2)18(25-4)17(11-13)24-3;;/h5-11H,1-4H3,(H2,19,20,21);;/q;2*+1/p-2/b6-5-;;
Gene Information   human ... TUBA1A(7846), TUBA1B(10376), TUBA1C(84790), TUBA3C(7278), TUBA3E(112714), TUBA4A(7277), TUBB(203068), TUBB1(81027), TUBB2A(7280), TUBB2B(347733), TUBB3(10381), TUBB4A(10382), TUBB4B(10383), TUBB6(84617), TUBB8(347688)



5, 25 mg in glass bottle

Biochem/physiol Actions

Fosbretabulin disodium (Combretastatin A4 phosphate, CA4P) is a potent vascular-disrupting agent (VDA). Fosbretabulin disodium is a prodrug that is converted to combretastatin A (Sigma Cat No. C7744) inside the endothelial cells that line blood vessels, where it binds to tubulin dimers and prevents microtubule polymerization, resulting in mitotic arrest and apoptosis in endothelial cells. Fosbretabulin disodium is a potent anti-cancer agent that exhibits antivascular effects on tumor vasculature, inducing a rapid reduction in tumor blood flow and a concomitant increase of cellular necrosis. Some of its activity is believed to involve interference with vascular endothelial-cadherin signaling in addition to its microtubule-disrupting activity.

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 sigma.com/discover-bsm.

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis (COA)

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Protocols & Articles


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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