Catalog Number: 4988
Chemical Name: 1,1'-(4,4'',5',6'-Tetrahydroxy[1,1':4',1''-terphenyl]-2',3'-diyl) benzeneacetic acid ester
Biological Activity
Inhibitor of ubiquitin-specific peptidase 4 (USP4), USP5/isopeptidase T (IsoT) and UCH-L1 deubiquitinating enzyme (DUB) activity (IC50 values are 1.5, 5.9 and 22.3 μM, respectively). Shows no significant inhibition of UCH-L3, USP2, and USP8 activities. Decreases release of TNF-α (IC50 = 0.09 nM) from RBL-2H3 mast cells. Displays anti-cancer activity decreasing viability in human colonic carcinoma cells.
Technical Data
  • M.Wt:
    562.57
  • Formula:
    C34H26O8
  • Solubility:
    Soluble to 20 mM in DMSO
  • Purity:
    >98%
  • Storage:
    Store at -20°C
  • CAS No:
    858134-23-3
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis. All Tocris products are intended for laboratory research use only.
Background References
  1. Anticancer activities of thelephantin O and vialinin A isolated from Thelephora aurantiotincta.
    Norikura et al.
    J.Agric.Food Chem., 2011;59:6974
  2. Vialinin A is a ubiquitin-specific peptidase inhibitor.
    Okada et al.
    Bioorg.Med.Chem.Lett., 2013;23:4328
  3. Inhibitory effects of vialinin A and its analog on tumor necrosis factor-α release and production from RBL-2H3 cells.
    Onose et al.
    Cell Immunol., 2012;279:140

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