1. JAK/STAT Signaling Protein Tyrosine Kinase/RTK Apoptosis
  2. EGFR Apoptosis
  3. Poziotinib

Poziotinib  (Synonyms: HM781-36B; NOV120101)

Cat. No.: HY-15730 Purity: 99.96%
SDS COA Handling Instructions

Poziotinib (HM781-36B) is an orally active, irreversible pan-HER inhibitor, which effectively inhibits EGFRwt, HER-2 and HER-4 with IC50s of 3.2, 5.3 and 23.5 nM, respectively. Poziotinib (HM781-36B) also shows excellent inhibitory activities against mutated EGFRs, including EGFRT790M and EGFRL858R/T790M, with IC50s of 4.2 and 2.2 nM, respectively. Excellent antitumor activity.

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

Poziotinib Chemical Structure

Poziotinib Chemical Structure

CAS No. : 1092364-38-9

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Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
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Customer Review

Based on 9 publication(s) in Google Scholar

Top Publications Citing Use of Products

    Poziotinib purchased from MedChemExpress. Usage Cited in: Cancers (Basel). 2020 Nov 4;12(11):3249.  [Abstract]

    Poziotinib, at 0.1, 0.3 and 0.6 μM, produces a significant decrease in the expression level of the ABCG2 transporter protein in S1-M1-80 cells after 72 h of incubation, compared to cells incubated with vehicle (0 μM). ABCG2 protein expression is significantly decreased in S1-M1-80 cells following incubation with 0.6 µM of Poziotinib for 48 or 72 h.
    • Biological Activity

    • Purity & Documentation

    • References

    • Customer Review

    Description

    Poziotinib (HM781-36B) is an orally active, irreversible pan-HER inhibitor, which effectively inhibits EGFRwt, HER-2 and HER-4 with IC50s of 3.2, 5.3 and 23.5 nM, respectively. Poziotinib (HM781-36B) also shows excellent inhibitory activities against mutated EGFRs, including EGFRT790M and EGFRL858R/T790M, with IC50s of 4.2 and 2.2 nM, respectively. Excellent antitumor activity[1][2].

    IC50 & Target

    IC50: 3.2 nM (EGFRwt), 5.3 nM (HER-2), 23.5 nM (HER-4) 4.2 nM (EGFRT790M), 2.2 nM (EGFRL858R/T790M)[2]

    Cellular Effect
    Cell Line Type Value Description References
    A-431 GI50
    0.654 μM
    Compound: Poziotinib
    Antiproliferative activity against human A-431 cells harboring wild type EGFR measured after 72 hrs by CellTiter-Glo assay
    Antiproliferative activity against human A-431 cells harboring wild type EGFR measured after 72 hrs by CellTiter-Glo assay
    [PMID: 35486541]
    A-431 IC50
    0.9 nM
    Compound: 38; HM781e36B
    Antiproliferative activity against human A431 cells expressing wild type EGFR incubated for 72 hrs by MTS assay
    Antiproliferative activity against human A431 cells expressing wild type EGFR incubated for 72 hrs by MTS assay
    [PMID: 28754471]
    A-431 EC50
    1.445 μM
    Compound: Poziotinib
    Antiproliferative activity against human A-431 cells harboring wild type EGFR measured after 72 hrs by CellTiter-Glo assay
    Antiproliferative activity against human A-431 cells harboring wild type EGFR measured after 72 hrs by CellTiter-Glo assay
    [PMID: 35486541]
    A-431 CC50
    31 nM
    Compound: Poziotinib
    Cytotoxicity in human A431 cells assessed as reduction in cell viability incubated for 96 hrs by MTS method
    Cytotoxicity in human A431 cells assessed as reduction in cell viability incubated for 96 hrs by MTS method
    [PMID: 31560541]
    BaF3 GI50
    0.002 μM
    Compound: Poziotinib
    Antiproliferative activity against mouse Ba/F3 cells harbouring Her2-A775_G776insYVMA mutant measured after 72 hrs by CellTiter-Glo assay
    Antiproliferative activity against mouse Ba/F3 cells harbouring Her2-A775_G776insYVMA mutant measured after 72 hrs by CellTiter-Glo assay
    [PMID: 35486541]
    BaF3 EC50
    0.012 μM
    Compound: Poziotinib
    Antiproliferative activity against mouse Ba/F3 cells harbouring Her2-A775_G776insYVMA mutant measured after 72 hrs by CellTiter-Glo assay
    Antiproliferative activity against mouse Ba/F3 cells harbouring Her2-A775_G776insYVMA mutant measured after 72 hrs by CellTiter-Glo assay
    [PMID: 35486541]
    BaF3 IC50
    0.21 nM
    Compound: Poziotinib
    Antiproliferative activity against mouse BAF3 cells harboring HER2-P780-Y781 ins GSP mutant after 72 hrs by celltiter-Glo luminescence assay
    Antiproliferative activity against mouse BAF3 cells harboring HER2-P780-Y781 ins GSP mutant after 72 hrs by celltiter-Glo luminescence assay
    [PMID: 36804726]
    BaF3 IC50
    0.43 nM
    Compound: Poziotinib
    Antiproliferative activity against mouse BAF3 cells harboring HER2-A775-G776 ins YVMA mutant after 72 hrs by celltiter-Glo luminescence assay
    Antiproliferative activity against mouse BAF3 cells harboring HER2-A775-G776 ins YVMA mutant after 72 hrs by celltiter-Glo luminescence assay
    [PMID: 36804726]
    BaF3 IC50
    0.58 nM
    Compound: Poziotinib
    Antiproliferative activity against mouse BAF3 cells harboring FL-EGFR A763-Y764 ins FQEA mutant after 72 hrs by celltiter-Glo luminescence assay
    Antiproliferative activity against mouse BAF3 cells harboring FL-EGFR A763-Y764 ins FQEA mutant after 72 hrs by celltiter-Glo luminescence assay
    [PMID: 36804726]
    BaF3 IC50
    0.62 nM
    Compound: Poziotinib
    Antiproliferative activity against mouse BAF3 cells harboring FL-EGFR D770-N771 ins NPG mutant after 72 hrs by celltiter-Glo luminescence assay
    Antiproliferative activity against mouse BAF3 cells harboring FL-EGFR D770-N771 ins NPG mutant after 72 hrs by celltiter-Glo luminescence assay
    [PMID: 36804726]
    Calu-3 GI50
    10.12 nM
    Compound: cpd p
    Antiproliferative activity against human Calu-3 cells assessed as reduction in cell viability after 72 hrs by CCK-8 assay
    Antiproliferative activity against human Calu-3 cells assessed as reduction in cell viability after 72 hrs by CCK-8 assay
    [PMID: 35364239]
    HS27 GI50
    3830 nM
    Compound: 38; HM781e36B
    Antiproliferative activity against human HS27 cells expressing wild type HER2 incubated for 72 hrs by MTS assay
    Antiproliferative activity against human HS27 cells expressing wild type HER2 incubated for 72 hrs by MTS assay
    [PMID: 28754471]
    NCI-H1975 IC50
    5.7 nM
    Compound: 38; HM781e36B
    Antiproliferative activity against human NCI-H1975 cells expressing EGFR T790M/L858R mutant incubated for 72 hrs by MTS assay
    Antiproliferative activity against human NCI-H1975 cells expressing EGFR T790M/L858R mutant incubated for 72 hrs by MTS assay
    [PMID: 28754471]
    NCI-H358 GI50
    8.67 nM
    Compound: cpd p
    Antiproliferative activity against human NCI-H358 cells assessed as reduction in cell viability after 72 hrs by CCK-8 assay
    Antiproliferative activity against human NCI-H358 cells assessed as reduction in cell viability after 72 hrs by CCK-8 assay
    [PMID: 35364239]
    PC-9 GI50
    0.9 nM
    Compound: cpd p
    Antiproliferative activity against human PC-9 cells expressing EGFR E746/A750 deletion mutant assessed as reduction in cell viability after 72 hrs by CCK-8 assay
    Antiproliferative activity against human PC-9 cells expressing EGFR E746/A750 deletion mutant assessed as reduction in cell viability after 72 hrs by CCK-8 assay
    [PMID: 35364239]
    SK-BR-3 IC50
    1 nM
    Compound: 38; HM781e36B
    Antiproliferative activity against human SKBR3 cells expressing wild type HER2 incubated for 72 hrs by MTS assay
    Antiproliferative activity against human SKBR3 cells expressing wild type HER2 incubated for 72 hrs by MTS assay
    [PMID: 28754471]
    In Vitro

    The IC50 levels of Poziotinib (HM781-36B) for N87 and SNU216 were 0.001 and 0.004 μM, respectively, which was 10-1000 fold lower than the IC50 levels of other HER family TKIs. HM781-36B more potently inhibited the phosphorylation of HER family and downstream proteins, and induced apoptosis and G1 arrest compared to ZD1839 or GW572016[1].
    Poziotinib (HM781-36B) also shows excellent selectivity with other kinases with greater than 100- to 1,000- fold IC50 values compared with EGFR family members. Poziotinib (HM781-36B) possesses a functional α,β‐unsaturated carbonyl group as Michael acceptor moiety at the C6 position that allows covalent modifications of the EGFR kinase domain active site[2].
    The addition of HM781-36B induced potent growth inhibition in both DiFi cells with EGFR overexpression and SNU-175 cells (IC50=0.003 and 0.005 μM, respectively). Furthermore, HM781-36B induced G1 arrest of the cell cycle and apoptosis, and reduced the levels of HER family and downstream signaling molecules, pERK and pAKT, as well as nonreceptor/cytoplasmic tyrosine kinase, BMX[3].

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

    In Vivo

    The growth of tumors in mice treated with HM781-36B alone or in combination with 5-FU was significantly inhibited compared with control mice, and tumor volume in mice receiving coadministraion of HM781-36B and 5-FU was smaller than tumor volume in mice receiving HM781-36B only[1].

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

    Molecular Weight

    491.34

    Formula

    C23H21Cl2FN4O3

    CAS No.
    Appearance

    Solid

    Color

    White to off-white

    SMILES

    C=CC(N1CCC(OC2=CC3=C(NC4=CC=C(Cl)C(Cl)=C4F)N=CN=C3C=C2OC)CC1)=O

    Shipping

    Room temperature in continental US; may vary elsewhere.

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

    DMSO : 50 mg/mL (101.76 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

    Preparing
    Stock Solutions
    Concentration Solvent Mass 1 mg 5 mg 10 mg
    1 mM 2.0353 mL 10.1763 mL 20.3525 mL
    5 mM 0.4071 mL 2.0353 mL 4.0705 mL
    View the Complete Stock Solution Preparation Table

    * Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
    Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

    • Molarity Calculator

    • Dilution Calculator

    Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

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    Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

    This equation is commonly abbreviated as: C1V1 = C2V2

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    In Vivo:

    Select the appropriate dissolution method based on your experimental animal and administration route.

    For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
    To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
    The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

    • Protocol 1

      Add each solvent one by one:  5% DMSO    40% PEG300    5% Tween-80    50% Saline

      Solubility: ≥ 2.87 mg/mL (5.84 mM); Clear solution

    • Protocol 2

      Add each solvent one by one:  5% DMSO    95% (20% SBE-β-CD in Saline)

      Solubility: ≥ 2.87 mg/mL (5.84 mM); Clear solution

    In Vivo Dissolution Calculator
    Please enter the basic information of animal experiments:

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    Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
    Please enter your animal formula composition:
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    Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
    The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
    Calculation results:
    Working solution concentration: mg/mL
    Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
    The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
    Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
     If the continuous dosing period exceeds half a month, please choose this protocol carefully.
    Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
    Purity & Documentation

    Purity: 99.96%

    References

    Complete Stock Solution Preparation Table

    * Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
    Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

    Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
    DMSO 1 mM 2.0353 mL 10.1763 mL 20.3525 mL 50.8813 mL
    5 mM 0.4071 mL 2.0353 mL 4.0705 mL 10.1763 mL
    10 mM 0.2035 mL 1.0176 mL 2.0353 mL 5.0881 mL
    15 mM 0.1357 mL 0.6784 mL 1.3568 mL 3.3921 mL
    20 mM 0.1018 mL 0.5088 mL 1.0176 mL 2.5441 mL
    25 mM 0.0814 mL 0.4071 mL 0.8141 mL 2.0353 mL
    30 mM 0.0678 mL 0.3392 mL 0.6784 mL 1.6960 mL
    40 mM 0.0509 mL 0.2544 mL 0.5088 mL 1.2720 mL
    50 mM 0.0407 mL 0.2035 mL 0.4071 mL 1.0176 mL
    60 mM 0.0339 mL 0.1696 mL 0.3392 mL 0.8480 mL
    80 mM 0.0254 mL 0.1272 mL 0.2544 mL 0.6360 mL
    100 mM 0.0204 mL 0.1018 mL 0.2035 mL 0.5088 mL
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