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    7-Epitaxol
    7-Epitaxol
    Information
    CAS No. 105454-04-4 Price $100 / 20mg
    Catalog No.CFN90371Purity>=98%
    Molecular Weight853.91Type of CompoundDiterpenoids
    FormulaC47H51NO14Physical DescriptionCryst.
    Download     COA    MSDSSimilar structuralComparison (Web)
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    7-Epitaxol Description
    Source: The barks of Taxus chinensis (Pilger) Rehd.
    Biological Activity or Inhibitors: 1. 7-Epitaxol is the major derivative of taxol found in cells and that its presence does not alter, in a major way, the overall biological activity of taxol.
    Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
    Storage: Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C).

    Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.

    Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com

    After receiving: The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
    Calculate Dilution Ratios(Only for Reference)
    1 mg 5 mg 10 mg 20 mg 25 mg
    1 mM 1.1711 mL 5.8554 mL 11.7108 mL 23.4217 mL 29.2771 mL
    5 mM 0.2342 mL 1.1711 mL 2.3422 mL 4.6843 mL 5.8554 mL
    10 mM 0.1171 mL 0.5855 mL 1.1711 mL 2.3422 mL 2.9277 mL
    50 mM 0.0234 mL 0.1171 mL 0.2342 mL 0.4684 mL 0.5855 mL
    100 mM 0.0117 mL 0.0586 mL 0.1171 mL 0.2342 mL 0.2928 mL
    * Note: If you are in the process of experiment, it's need to make the dilution ratios of the samples. The dilution data of the sheet for your reference. Normally, it's can get a better solubility within lower of Concentrations.
    7-Epitaxol References Information
    Citation [1]

    Anticancer Agents Med Chem. 2015;15(3):400-5.

    Mesenchymal stromal cells uptake and release paclitaxel without reducing its anticancer activity.[Pubmed: 24942547]
    To improve the drug delivery efficiency on target cells, many strategies have been developed including Mesenchymal Stromal Cells (MSCs) approaches. In a previous study, we found that bone-marrow-derived MSCs (BM-MSCs) were able to incorporate and release the anti-tumor and anti-angiogenic drug, Paclitaxel (PTX). In this study, we evaluated the stability of PTX in standard cell culture conditions by analyzing the metabolites produced by MSCs after their incorporation of the drug. We are able to show that MSCs do not release either 3-OH-PTX or 6-OH-PTX metabolites (having a lower anticancer activity) but release an active PTX molecule together with the isomer 7-Epitaxol, is known to maintain the whole biological activity. This confirms that the simple procedure of MSCs priming with a drug (without any genetic cell manipulation), in our case PTX, does not modify the activity of the molecule and provides a new biological-device to carry and deliver PTX in tumor sites, by contributing to improve drug efficacy and target selectivity in cancer therapy.
    Citation [2]

    J Pharmacol Exp Ther. 1987 Aug;242(2):692-8.

    Taxol is converted to 7-epitaxol, a biologically active isomer, in cell culture medium.[Pubmed: 2886648]
    The hydrolysis products of taxol have been isolated by high-performance liquid chromatography and identified by nuclear magnetic resonance and mass spectroscopy. In contrast to taxol, the major hydrolysis product, baccatin III, has little cytotoxic activity and does not promote in vitro microtubule assembly. In cell culture medium, the concentration of taxol decreases with time and 7-Epitaxol, which exhibits properties comparable to those of taxol both on cells and on in vitro microtubuli polymerization, is formed. Baccatin III is found in small quantities in the cell medium, although it is barely detectable within the cells. It is concluded that 7-Epitaxol is the major derivative of taxol found in cells and that its presence does not alter, in a major way, the overall biological activity of taxol.