• Cyclosporin B, EvoPure packaged and labeled.

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SKU: C043

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Description

Cyclosporin B, EvoPure is a dihydroxylated metabolite of cyclosporin A (CsA). Cyclosporin B (M-26) and other cyclosporin metabolites have been found to have lower (<10%) immunosuppressant activity than cyclosporin A (CsA). Cyclosporin B and other metabolites have been isolated and characterized but do not appear to have been extensively studied.

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    CAS Number

    63775-95-1

    Molecular Formula

    C61H109N11O12

    Molecular Weight

    1188.58 g/mol

    Mechanism of Action

    Cyclosporin B (and other cyclosporin A (CsA) metabolites) have lower immunosuppressant activity but most likely operate under the same mechanism as cyclosporin A (CsA) described below.

    Cyclosporin A (CsA) immunosuppressant activity stems from its ability to prevent T-cell activation by blocking specific cytokine transcription genes. After entering a T-cell, cyclosporin A (CsA) associates with ubiquitous cytosolic proteins called cyclophilins which aid in protein folding. Cyclosporin A (CsA) : cyclophilin complexes together bind calcineurin, (another cytosolic protein) effectively blocking the pathway to IL-2 gene transcription and T-cell activation.

    Storage Conditions

    -20°C

    Tariff Code

    2933.79.8500

Applications

    Cancer Applications

    Cyclosporin metabolites can be used to study toxicity and immunosuppressant activity in various in vitro assays and experiments.

Specifications

    Appearance

    White powder

    Source

    Tolypocladium Inflatum

    Water Content (Karl Fisher)

    ≤3.0%

    Melting Point

    149-152 °C

    Assay

    ≥95.0% (as is)

    Heavy Metals

    ≤0.02%

    Impurities

    Total: ≤5.0%

Technical Data

Spectral Data - Cyclosporin B, EvoPure®


HNMR Spectra


      

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Solvent: DMSO
Instrument: Varian 300
Frequency: 300 MHz

 

Mass Spectra

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Polarity/Scan Type: Positive
Solvent: MeOH
Solution Concentration: 10 mg/mL
Instrument: Agilent

References

    References

    Stiller, C. R., MD, and R. A. Ulan, MD. "Cyclosporin A: A Powerful Immunosuppressant."Canadian Medical Association 126 (1981): 1041-046. www.ncbi.gov. Web. 27 Aug. 2012.

    Crabtree, G. R., J. Nourse, and L. Timmermann. "The Mechanism of Action of Cyclosporin A and FK506." Clinical Immunology and Immunotherapy (1996): 40-45.www.ncbi.gov. Web. 27 Aug. 2012.

    Wang, Paul C. et. al. "Isolation of 10 Cyclosporine Metabolites from Human Bile." Drug Metabolism and Disposition 17.3 (1989): 292-96. Nih.gov. Web. 28 Oct. 2013.

    Copeland, Kenneth R. "Immunosuppressive Activity of Cyclosporine Metabolites Compared and Characterized by Mass Spectrometry and Nuclear Magnetic Resonance."Clinical Chemistry 36.2 (1990): 225-29. Web. 28 Oct. 2013.

    Matsuda, Staoshi. "Mechanisms of Action of Cyclosporine." Immunopharmacology 47 (2000): 119-25. Elsevier. Web. 28 Oct. 2013.

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