1. Cell Cycle/DNA Damage Epigenetics
  2. PARP
  3. PJ34 hydrochloride

PJ34 hydrochloride 

Cat. No.: HY-13688 Purity: 99.91%
COA Handling Instructions

PJ34 hydrochloride is an inhibitor of PARP1/2 with IC50 of 110 nM and 86 nM, respectively.

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

PJ34 hydrochloride Chemical Structure

PJ34 hydrochloride Chemical Structure

CAS No. : 344458-15-7

Size Price Stock Quantity
Solid + Solvent
10 mM * 1 mL in Water
ready for reconstitution
USD 40 In-stock
10 mM * 1 mL in Water USD 40 In-stock
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10 mg USD 60 In-stock
50 mg USD 180 In-stock
100 mg USD 288 In-stock
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Customer Review

Based on 17 publication(s) in Google Scholar

Other Forms of PJ34 hydrochloride:

Top Publications Citing Use of Products

    PJ34 hydrochloride purchased from MedChemExpress. Usage Cited in: Sci Rep. 2017 May 23;7(1):2268.  [Abstract]

    The PARP inhibitor PJ34 prevents TCDD toxicities while increasing NAD+ levels. (a,b) Western blots on homogenates of liver and thymus glands from CE treated with TCDD or vehicle with or without PJ34.
    • Biological Activity

    • Protocol

    • Purity & Documentation

    • References

    • Customer Review


    PJ34 hydrochloride is an inhibitor of PARP1/2 with IC50 of 110 nM and 86 nM, respectively.

    IC50 & Target[1]


    110 nM (IC50)


    86 nM (IC50)


    110 nM (IC50)

    In Vitro

    PJ34 inhibits the PARP enzyme activity with an IC50 of 110±1.9 nM. To compare the neuroprotective properties of other PARP inhibitors in PC12 cells, PJ34 is evaluated using by LDH assay. PJ34 treatment also significantly and concentration dependently attenuates cell death at a concentration ranging from 10-7 to 10-5 M[1].

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

    In Vivo

    To compare the potency and efficacy with other PARP inhibitors, PJ34 is evaluated at the doses of 3.2 and 10 mg/kg, respectively. PJ34 at the dose of 3.2 mg/kg significantly reduces cortical damage by 33%; however, 10 mg/kg dosing shows reversed effect (17% reduction)[1]. PJ34 (25 mg/kg) reduces the levels of TNF-α mRNA in ischemic animals by 70% and these values in treated mice do not differ from that of sham or naive animals. Treatment of ischemic mice with PJ34 reduces the level of E-selectin mRNA by 81% and that of ICAM-1 mRNA by 54%, compared to vehicle-treated ischemic mice[2].

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

    Molecular Weight






    CAS No.



    Room temperature in continental US; may vary elsewhere.


    4°C, sealed storage, away from moisture

    *In solvent : -80°C, 1 years; -20°C, 6 months (sealed storage, away from moisture)

    Solvent & Solubility
    In Vitro: 

    H2O : 50 mg/mL (150.69 mM; Need ultrasonic)

    DMSO : 10 mg/mL (30.14 mM; ultrasonic and warming and heat to 60°C)

    Stock Solutions
    Concentration Solvent Mass 1 mg 5 mg 10 mg
    1 mM 3.0139 mL 15.0693 mL 30.1386 mL
    5 mM 0.6028 mL 3.0139 mL 6.0277 mL
    10 mM 0.3014 mL 1.5069 mL 3.0139 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: ≥ 1 mg/mL (3.01 mM); Clear solution

    • 2.

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

      Solubility: ≥ 1 mg/mL (3.01 mM); Clear solution

    • 3.

      Add each solvent one by one:  10% DMSO    90% Corn Oil

      Solubility: ≥ 1 mg/mL (3.01 mM); Clear solution

    *All of the co-solvents are available by MedChemExpress (MCE).
    Purity & Documentation

    Purity: 99.91%

    Kinase Assay

    To assess the PARP-1 or PARP-2 inhibitory activity of FR247304, 3-AB, and PJ34, PARP activity is evaluated with minor modifications. PARP enzyme assay is carried out in a final volume of 100 μL consisting of 50 mM Tris-HCl (pH 8.0), 25 mM MgCl2, 1 mM dithiothreitol, 10 μg activated salmon sperm DNA, 0.1 μCi of [adenylate-32P]NAD, 0.2 units of recombinant human PARP for PARP-1 assay or 0.1 units of recombinant mouse PARP-2 for PARP-2 assay, and various concentrations of FR261529 or 3-AB. The reaction mixture is incubated at room temperature (23°C) for 15 min, and the reaction is terminated by adding 200 μL of ice-cold 20% trichloroacetic acid (TCA) and incubated at 4°C for 10 min. The precipitate is transferred onto GF/B filter and washed three times with 10% TCA solution and 70% ethanol. After the filter is dried, the radioactivity is determined by liquid scintillation counting.

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

    Cell Assay

    PC12 cell cultured are grown in Dulbecco's modified Eagle's medium supplemented with 5% (v/v) fetal calf serum, 5% (v/v) horse serum, and a 1% (v/v) penicillin-streptomycin antibiotics mixture. Cells are grown in an atmosphere of 95% air and 5% CO2 at 37°C. For all experiment, cells are seeded at a density of 4×104 cells/well in 96-well culture plates and allowed to attach overnight. For assessment of cell viability, hydrogen peroxide-induced cytotoxicity is quantified by a standard measurement of LDH release with the use of the LDH assay kit. Briefly, 6 h after hydrogen peroxide exposure, 20 μL of medium of each well is collected, and the solution prepared from LDH assay kit is added. After incubation at room temperature for 30 min, the reaction is stopped by addition of 1 N HCl, and absorbance is measured at 450 nm using a microplate reader.

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

    Animal Administration

    For transient focal ischemia, 9- to 10-week-old male Wistar rats (weighing 274-380 g) are used. FR247304, PJ34, or 3-AB, which is suspended with 0.5% methylcellulose, is administered at doses of 10 and 32 mg/kg for FR247304, 3.2 and 10 mg/kg for PJ34, or 32 and 100 mg/kg for 3-AB intraperitonially twice at 10 min before MCA occlusion and 10 min before recirculation. The administration volume is adjusted to 2 mL/kg.
    Male Swiss albino mice (27-32 g) are used. The PARP inhibitor, PJ34 (1.25, 12.5 or 25 mg/kg) is dissolved in isotonic saline (NaCl, 0.9%) and injected intraperitoneally, in a volume of 10 mL/kg, 15 min before ischemia and again 4 h after the onset of ischemia. Control ischemic mice and sham animals are given vehicle (saline). Naive animals are also included in the studies.

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

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    • Do most proteins show cross-species activity?

      Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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