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PSC 833 (CAS 121584-18-7)

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Alternate Names:
Valspodar; 6-[(2S,4R,6E)-4-methyl-2-(methylamino)-3-oxo-6-octenoic acid]-7-L-valine-cyclosporin A
Application:
PSC 833 is a P-glycoprotein (P-gp, Mdr-1) modulator shown to inhibit P-gp-mediated multidrug-resistance (MDR).
CAS Number:
121584-18-7
Purity:
≥98%
Molecular Weight:
1214.62
Molecular Formula:
C63H111N11O12
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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PSC 833 is a potent inhibitor of P-glycoprotein, a membrane protein that functions as an efflux pump. PSC 833 is used to study the role of P-glycoprotein in resistance and to investigate potential strategies to overcome this resistance. PSC 833 is a substrate for P-glycoprotein and competes for binding to the protein, effectively blocking its ability to pump out of the cell.


PSC 833 (CAS 121584-18-7) References

  1. Effect of PSC 833, a P-glycoprotein modulator, on the disposition of vincristine and digoxin in rats.  |  Song, S., et al. 1999. Drug Metab Dispos. 27: 689-94. PMID: 10348798
  2. 99mTc-Sestamibi scanning with SDZ PSC 833 as a functional detection method for resistance modulation in patients with solid tumours.  |  Bakker, M., et al. 1999. Anticancer Res. 19: 2349-53. PMID: 10472354
  3. SDZ PSC 833 the drug resistance modulator activates cellular ceramide formation by a pathway independent of P-glycoprotein.  |  Goulding, CW., et al. 2000. Cancer Lett. 149: 143-51. PMID: 10737718
  4. Effect of PSC 833 on the cytotoxicity and pharmacodynamics of mitoxantrone in multidrug-resistant K562 cells.  |  Fukushima, T., et al. 2000. Leuk Res. 24: 249-54. PMID: 10739007
  5. Effect of PSC 833 liposomes and Intralipid on the transport of epirubicin in Caco-2 cells and rat intestines.  |  Lo, Y., et al. 2001. J Control Release. 76: 1-10. PMID: 11532308
  6. Reversal of multidrug-resistance using Valspodar (PSC 833) and doxorubicin in osteosarcoma.  |  Cagliero, E., et al. 2004. Oncol Rep. 12: 1023-31. PMID: 15492788
  7. PSC 833, an inhibitor of P-glycoprotein inhibits 1,2-dimethylhydrazine-induced colorectal carcinogenesis in male Fischer F344 rats.  |  Kankesan, J., et al. 2006. Anticancer Res. 26: 995-9. PMID: 16619498
  8. Modulation of multidrug resistance by SDZ PSC 833 in leukemic and solid-tumor-bearing mouse models.  |  Watanabe, T., et al. 1996. Jpn J Cancer Res. 87: 184-93. PMID: 8609068
  9. [SDZ PSC 833: a novel modulator of MDR].  |  Covelli, A. 1997. Tumori. 83: S21-4. PMID: 9446255
  10. The multidrug resistance modulator SDZ PSC 833 is a potent activator of cellular ceramide formation.  |  Cabot, MC., et al. 1998. FEBS Lett. 431: 185-8. PMID: 9708899
  11. PSC-833, a frontier in modulation of P-glycoprotein mediated multidrug resistance.  |  Atadja, P., et al. 1998. Cancer Metastasis Rev. 17: 163-8. PMID: 9770112
  12. Dose-dependent effects of PSC 833 on its tissue distribution and on the biliary excretion of endogenous substrates in rats.  |  Song, S., et al. 1998. Drug Metab Dispos. 26: 1128-33. PMID: 9806956
  13. Modulation of the tumor disposition of vinca alkaloids by PSC 833 in vitro and in vivo.  |  Song, S., et al. 1998. J Pharmacol Exp Ther. 287: 963-8. PMID: 9864280

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

PSC 833, 1 mg

sc-361298
1 mg
$213.00

PSC 833, 10 mg

sc-361298A
10 mg
$724.00

PSC 833, 50 mg

sc-361298B
50 mg
$2522.00

PSC 833, 100 mg

sc-361298C
100 mg
$4253.00

PSC 833, 1 g

sc-361298D
1 g
$26884.00

What is the appearance of the compound?

Asked by: two2igm05
Thank you for your question. PSC 833, sc-361298, is a white to off-white solid.
Answered by: Chemical Support 4
Date published: 2017-04-26
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Rated 5 out of 5 by from ParasharParashar, V. et al. (PubMed 25847993) found that Valspodar (PSC 883), a P-gp modulator, inhibits peptide pheromone activation of conserved Rgg proteins in medically relevant Streptococcus species. -SCBT Publication Review
Date published: 2015-04-20
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PSC 833 is rated 5.0 out of 5 by 1.
  • y_2025, m_10, d_14, h_6
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