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  3. Tamoxifen Citrate

Tamoxifen Citrate (Synonyms: ICI 46474)

Cat. No.: HY-13757 Purity: >99.0%
Handling Instructions

Tamoxifen Citrate is a selective estrogen receptor modulator (SERM).

For research use only. We do not sell to patients.

Tamoxifen Citrate Chemical Structure

Tamoxifen Citrate Chemical Structure

CAS No. : 54965-24-1

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10 mM * 1 mL in DMSO USD 66 In-stock
Estimated Time of Arrival: December 31
500 mg USD 60 In-stock
Estimated Time of Arrival: December 31
1 g USD 83 In-stock
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5 g USD 288 In-stock
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Customer Review

Based on 4 publication(s) in Google Scholar

Other Forms of Tamoxifen Citrate:

Top Publications Citing Use of Products

    Tamoxifen Citrate purchased from MCE. Usage Cited in: Cell Commun Signal. 2019 May. 

    Tamoxifen inhibits the growth and metastasis of prostate tumors in vivo. Western blot analysis of the indicated proteins in prostate primary tumors tissues.
    • Biological Activity

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    Tamoxifen Citrate is a selective estrogen receptor modulator (SERM).

    IC50 & Target

    Estrogen receptor[1]

    In Vitro

    Tamoxifen shows strong inhibition of MCF-7 cells (EC50=1.41 μM) and to a lesser extent the T47D cells (EC50=2.5 μM) but does not affect the MDA-MB-231 cells[2].

    In Vivo

    The Tamoxifen-inducible gene knockout strategy has clear advantages in that expression of a gene can be ablated in adult mice at will in a tissue specific manner. To study the role of Med1 in adult heart, 7-week old TmcsMed1-/- mice are given a daily Iintraperitoneal injection of Tamoxifen at a dose of 65 mg/kg for 5 days and killed at selected intervals thereafter. qPCR analysis of RNA shows that the Med1 expression begin to decrease after 3 days of Tamoxifen injection (about 70% decrease), and by 5 days of injection, Med1 expression is almost non-detectable in the heart. Tamoxifen-inducible cardiac-specific disruption of Med1 (TmcsMed1-/-) in adult mice causes dilated cardiomyopathy[3].

    Clinical Trial
    Molecular Weight




    CAS No.





    Room temperature in continental US; may vary elsewhere

    Powder -20°C 3 years
      4°C 2 years
    In solvent -80°C 6 months
      -20°C 1 month
    Solvent & Solubility
    In Vitro: 

    DMSO : ≥ 570 mg/mL (1011.28 mM)

    H2O : < 0.1 mg/mL (insoluble)

    *"≥" means soluble, but saturation unknown.

    Stock Solutions
    Concentration Solvent Mass 1 mg 5 mg 10 mg
    1 mM 1.7742 mL 8.8709 mL 17.7418 mL
    5 mM 0.3548 mL 1.7742 mL 3.5484 mL
    10 mM 0.1774 mL 0.8871 mL 1.7742 mL
    *Please refer to the solubility information to select the appropriate solvent.
    Animal Administration

    Seven-week old TmcsMed1-/- mice and the wild-type littermates are then administered Tamoxifen intraperitoneally at a daily dose of 65 mg/kg body weight for 5 days and then killed at selected intervals after initiation of Tamoxifen treatment. For each experiment 3 to 5 mice for control and csMed1-/- are used. To obtain survival curve 41 csMed1-/- and 41 csMed1fl/fl mice are used. Thirteen TmcsMed-/- mice and the same number of littermates are used for the survival curve experiments using Tamoxifen inducible model. The specific criteria for animal euthanasia included absence of food or water intake, slow or no mobility, weak or absence of heart beat, absence of palpitation of the chest as well as absence of respiratory movement. Mice are euthanized by intraperitoneal pentobarbital injection at the dose of 150mg/kg body weight to minimize suffering.

    MCE has not independently confirmed the accuracy of these methods. They are for reference only.


    Purity: >99.0%

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