1. Cell Cycle/DNA Damage
    Apoptosis
  2. CDK
    Apoptosis
  3. BS-181

BS-181 

Cat. No.: HY-13266
Handling Instructions

BS-181 is a potent and selective CDK7 inhibitor (IC50=21 nM) than Seliciclib (HY-30237). BS-181 is also against CDK2, CDK5 and CDK9 with IC50 values of 880, 3000 and 4200 nM, respectively (fails to block CDK1, 4 and 6). BS-181 inhibits a panel of cancer cells growth (IC50=11.5 μM-37.3 μM) and induces cell apoptosis. BS-181 has the potential for the research of cancer therapy.

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

BS-181 Chemical Structure

BS-181 Chemical Structure

CAS No. : 1092443-52-1

Size Price Stock Quantity
Solution
10 mM * 1 mL in DMSO USD 121 In-stock
Estimated Time of Arrival: December 31
Solid + Solvent
10 mM * 1 mL
ready for reconstitution
USD 121 In-stock
Estimated Time of Arrival: December 31
Solid
5 mg USD 110 In-stock
Estimated Time of Arrival: December 31
10 mg USD 180 Get quote
50 mg USD 610 Get quote
100 mg   Get quote  
200 mg   Get quote  

* Please select Quantity before adding items.

Customer Review

Based on 4 publication(s) in Google Scholar

Other Forms of BS-181:

Top Publications Citing Use of Products

    BS-181 purchased from MCE. Usage Cited in: Theranostics. 2017 Apr 20;7(7):1914-1927.

    Effect of TPL on the levels of pAR S515 and related proteins in PCa cells. LNCaP and C4-2/AR-V7 cells are pretreated with TPL or BS-181 for 1 h, and then incubated with R1881 for 4 h.
    • Biological Activity

    • Purity & Documentation

    • References

    • Customer Review

    Description

    BS-181 is a potent and selective CDK7 inhibitor (IC50=21 nM) than Seliciclib (HY-30237). BS-181 is also against CDK2, CDK5 and CDK9 with IC50 values of 880, 3000 and 4200 nM, respectively (fails to block CDK1, 4 and 6). BS-181 inhibits a panel of cancer cells growth (IC50=11.5 μM-37.3 μM) and induces cell apoptosis. BS-181 has the potential for the research of cancer therapy[1][2].

    IC50 & Target[1]

    CDK7/CycH/MAT1

    0.021 μM (IC50)

    CDK2/Cyc E

    0.88 μM (IC50)

    CDK5/p35NCK

    3 μM (IC50)

    CDK9/cycT

    4.2 μM (IC50)

    CDK1/cycB

    8.1 μM (IC50)

    CDK4/Cyc D1

    33 μM (IC50)

    CDK6/cycD1

    47 μM (IC50)

    In Vitro

    BS-181 (0-40 μM; 72 hours) inhibits cancer cells growth, it is against Breast cancer cell lines growth with IC50 values ranging from 15.1 μM to 20 μM, it is against Colorectal cancer cell lines growth with IC50 values ranging from 11.5 μM to15.3 μM and is against lung, osteosarcoma, prostate and liver cancer cell lines with IC50 values ranging from 11.5 μM to 37.3 μM, respectively[1].
    BS-181 (0-50 μM; 4 hours) shows inhibition of phosphorylation of the RNA polymerase II C-terminal domain (CTD) at serine 5 (P-Ser5). It down-regulates CDK4 and cyclin D1 expression while does not effect other CDKs and cyclins[1].
    BS-181 (0-50 μM; 24 hours) shows an increase in cells in G1, accompanied by a reduction in cell numbers in S and G2/M at low concentrations. At higher concentrations, however, cells accumulates in the sub-G1, indicative of apoptosis[1].

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

    Cell Proliferation Assay[1]

    Cell Line: Breast cancer cell line: MCF-7, MDA-MB-231, T47D, ZR-75-1, etc
    Colorectal cancer cell line: COLO-205, HCT-116, HCT-116 (p53-/-)
    Lung cancer cell line: A549, NCI-460
    Osteosarcoma cancer cell line: U2OS, SaOS2
    Prostate cancer cell line: PC3, LNCaP
    Concentration: 0-50 μM
    Incubation Time: 4 hours
    Result: Had anti-proliferative activities against a panel of cell lines, including breast, lung, prostate and colorectal cancer.

    Western Blot Analysis[1]

    Cell Line: MCF-7 cells
    Concentration: 0-40 μM
    Incubation Time: 72 hours
    Result: Inhibited phosphorylation of CDK7 substrates.

    Apoptosis Analysis[1]

    Cell Line: MCF-7 cells
    Concentration: 0-50 μM
    Incubation Time: 24 hours
    Result: Led cells to G1 arrest and apoptosis.
    In Vivo

    BS-181 (intraperitoneal injection; 5 mg/kg or 10 mg/kg twice daily; total daily doses of 10 mg/kg or 20 mg/kg; 14 days) inhibitstumor growth in a dose-dependent manner. Tumor growth exhibits 25% and 50% reduction compared with the control group, for 10 mg/kg/day and 20 mg/kg/day, respectively[1].

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

    Animal Model: 7-week old female nu/nu-BALB/c athymic nude mice with MCF-7 cells[1]
    Dosage: 5 mg/kg or 10 mg/kg; 10 mg/kg or 20 mg/kg
    Administration: Intraperitoneal injection; twice daily or once total daily; 14 days
    Result: Inhibited tumor growth significantly.
    Molecular Weight

    380.53

    Formula

    C₂₂H₃₂N₆

    CAS No.
    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 (131.40 mM)

    *"≥" means soluble, but saturation unknown.

    Preparing
    Stock Solutions
    Concentration Solvent Mass 1 mg 5 mg 10 mg
    1 mM 2.6279 mL 13.1396 mL 26.2791 mL
    5 mM 0.5256 mL 2.6279 mL 5.2558 mL
    10 mM 0.2628 mL 1.3140 mL 2.6279 mL
    *Please refer to the solubility information to select the appropriate solvent.
    In Vivo:
    • 1.

      Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% saline

      Solubility: ≥ 3 mg/mL (7.88 mM); Clear solution

    • 2.

      Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in saline)

      Solubility: ≥ 3 mg/mL (7.88 mM); Clear solution

    • 3.

      Add each solvent one by one:  10% DMSO    90% corn oil

      Solubility: ≥ 3 mg/mL (7.88 mM); Clear solution

    *All of the co-solvents are provided by MCE.
    References
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    Product Name:
    BS-181
    Cat. No.:
    HY-13266
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