FK 228

Pricing Availability   Qty
Description: Potent and selective class I histone deacetylase inhibitor; antitumor
Alternative Names: Depsipeptide,FR 901228,Romidepsin
Chemical Name: Cyclo[(2Z)-2-amino-2-butenoyl-L-valyl-(3S,4E)-3-hydroxy-7-mercapto-4-heptenoyl-D-valyl-D-cysteinyl], cyclic (3-5) disulfide
Purity: ≥98% (HPLC)
Citations (4)
Literature (4)

Biological Activity for FK 228

FK 228 is a potent and selective inhibitor of class I histone deacetylases (HDACs) (IC50 values are 36, 47, 510 and 14,000 nM for HDAC1, HDAC2, HDAC4 and HDAC6 respectively). Exhibits cytotoxicity against various human tumor cell lines; also exhibits antitumor activity against human tumor xenografts.

External Portal Information for FK 228 is a portal that offers independent guidance on the selection and/or application of small molecules for research. The use of Romidepsin is reviewed on the Chemical Probes website.

Technical Data for FK 228

M. Wt 540.7
Formula C24H36N4O6S2
Storage Store at -20°C
Purity ≥98% (HPLC)
CAS Number 128517-07-7
PubChem ID 5352062
Smiles O=C([C@H]([C@H](C)C)NC(/C(NC([C@@H]2NC([C@@H]([C@H](C)C)N1)=O)=O)=C/C)=O)O[C@H](/C=C/CCSSC2)CC1=O

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.

Tocris products are intended for laboratory research use only, unless stated otherwise.

Solubility Data for FK 228

Solvent Max Conc. mg/mL Max Conc. mM
DMSO 5.41 10

Preparing Stock Solutions for FK 228

The following data is based on the product molecular weight 540.7. Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Select a batch to recalculate based on the batch molecular weight:
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
0.1 mM 18.49 mL 92.47 mL 184.95 mL
0.5 mM 3.7 mL 18.49 mL 36.99 mL
1 mM 1.85 mL 9.25 mL 18.49 mL
5 mM 0.37 mL 1.85 mL 3.7 mL

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Product Datasheets for FK 228

Certificate of Analysis / Product Datasheet
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References for FK 228

References are publications that support the biological activity of the product.

Sasakawa et al (2003) Effects of FK228, a novel histone deacetylase inhibitor, on tumor growth and expression of p21 and c-myc genes in vivo. Cancer Lett. 195 161 PMID: 12767524

Matsubara et al (2009) Involvement of extracellular signal-regulated kinase activation in human osteosarcoma cell resistance to the histone deacetylase inhibitor FK228 [(1S,4S,7Z,10S,16E,21R)-7-ethylidene-4,21-bis(propan-2-y J.Pharmacol.Exp.Ther. 328 839 PMID: 19073909

Furumai et al (2002) FK228 (depsipeptide) as a natural prodrug that inhibits class I histone deacetylases. Cancer Res. 62 4916 PMID: 12208741

If you know of a relevant reference for FK 228, please let us know.

View Related Products by Product Action

View all Class I HDAC Inhibitors

Keywords: FK 228, FK 228 supplier, FK228, antitumour, antitumor, HDAC, histone, deacetylases, class, I, HDAC1, HDAC2, inhibitors, inhibits, anticancer, FR, 109228, FR109228, Depsipeptide, Romidepsin, 901228, Class, HDACs, 3515, Tocris Bioscience

4 Citations for FK 228

Citations are publications that use Tocris products. Selected citations for FK 228 include:

Fukuda et al (2015) Class I histone deacetylase inhibitors inhibit the retention of BRCA1 and 53BP1 at the site of DNA damage. J Pharmacol Exp Ther 106 1050 PMID: 26053117

Pozo et al (2018) Preclinical characterization of tyrosine kinase inhibitor-based targeted therapies for neuroendocrine thyroid cancer. Oncotarget 9 37662 PMID: 30701022

Ting et al (2022) NF-κB-dependent repression of Sox18 transcription factor requires the epigenetic regulators histone deacetylases 1 and 2 in acute lung injury. Front Physiol 13 947537 PMID: 35991176

Steven L et al (2022) INF2-mediated actin filament reorganization confers intrinsic resilience to neuronal ischemic injury. Nat Commun 13 6037 PMID: 36229429

Do you know of a great paper that uses FK 228 from Tocris? Please let us know.

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Literature in this Area

Tocris offers the following scientific literature in this area to showcase our products. We invite you to request* your copy today!

*Please note that Tocris will only send literature to established scientific business / institute addresses.

Epigenetics Scientific Review

Epigenetics Scientific Review

Written by Susanne Müller-Knapp and Peter J. Brown, this review gives an overview of the development of chemical probes for epigenetic targets, as well as the impact of these tool compounds being made available to the scientific community. In addition, their biological effects are also discussed. Epigenetic compounds available from Tocris are listed.

Cell Cycle & DNA Damage Repair Poster

Cell Cycle & DNA Damage Repair Poster

In normal cells, each stage of the cell cycle is tightly regulated, however in cancer cells many genes and proteins that are involved in the regulation of the cell cycle are mutated or over expressed. This poster summarizes the stages of the cell cycle and DNA repair. It also highlights strategies for enhancing replicative stress in cancer cells to force mitotic catastrophe and cell death.

Epigenetics in Cancer Poster

Epigenetics in Cancer Poster

This poster summarizes the main epigenetic targets in cancer. The dysregulation of epigenetic modifications has been shown to result in oncogenesis and cancer progression. Unlike genetic mutations, epigenetic alterations are considered to be reversible and thus make promising therapeutic targets.

Rheumatoid Arthritis Poster

Rheumatoid Arthritis Poster

Rheumatoid arthritis (RA) is a chronic destructive inflammatory autoimmune disease that results from a breakdown in immune tolerance, for reasons that are as yet unknown. This poster summarizes the pathology of RA and the inflammatory processes involved, as well as describing some of the epigenetic modifications associated with the disease and the potential for targeting these changes in the discovery of new treatments.