Date published: 2026-3-10

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PARP-1 Inhibitors

PARP-1 inhibitors belong to a distinctive chemical class that targets an enzyme known as poly (ADP-ribose) polymerase 1, or PARP-1 for short. PARP-1 is a crucial player in the cellular DNA repair process, particularly in repairing single-strand breaks in DNA. These inhibitors are designed to selectively bind and inhibit the activity of PARP-1, thus modulating its function. By blocking the enzymatic activity of PARP-1, these compounds prevent the formation of poly (ADP-ribose) chains, which are involved in DNA repair and cellular homeostasis. The inhibition of PARP-1 can disrupt the DNA repair mechanism, leading to the accumulation of DNA damage and consequent cell death. PARP-1 inhibitors exhibit a unique mechanism of action, exerting their effects by interfering with DNA repair rather than directly targeting DNA itself. This distinct mode of action sets PARP-1 inhibitors apart from other classes of compounds that target DNA damage. Due to their specific interaction with PARP-1, these inhibitors have gained considerable attention in various fields of research and hold promise for applications in diverse areas of biology.

Items 21 to 26 of 26 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

PARP Inhibitor IX, EB-47

366454-36-6sc-222125
1 mg
$182.00
2
(0)

PARP Inhibitor IX, EB-47, exhibits a distinctive mechanism of action through its selective binding to PARP-1, facilitated by a network of electrostatic interactions and π-π stacking. The compound's unique structural motifs enhance its affinity, allowing it to effectively disrupt the enzyme's catalytic activity. Its kinetic properties suggest a rapid association and dissociation rate, which may influence the overall cellular response. Additionally, the presence of specific functional groups may modulate its interaction dynamics, impacting the enzyme's regulatory pathways.

Talazoparib

1207456-01-6sc-507440
10 mg
$795.00
(0)

Talazoparib tosylate is a PARP inhibitor that has shown efficacy in research studies against various cancers, including breast and ovarian cancers.

TIQ-A

420849-22-5sc-204916
sc-204916A
1 mg
5 mg
$68.00
$282.00
1
(1)

TIQ-A functions as a PARP-1 inhibitor by engaging in specific hydrogen bonding and hydrophobic interactions that stabilize its binding to the enzyme. Its unique conformation allows for a precise fit within the active site, effectively obstructing the enzyme's function. The compound's reaction kinetics indicate a slow onset of inhibition, which may lead to prolonged effects on cellular processes. Furthermore, its distinct electronic properties can influence the redox state of nearby residues, potentially altering enzymatic pathways.

4-HQN

491-36-1sc-200129
5 g
$32.00
(0)

4-HQN acts as a PARP-1 inhibitor through its ability to form strong π-π stacking interactions with aromatic residues in the enzyme's active site. This compound exhibits a unique binding affinity that enhances its selectivity, allowing for a more effective blockade of PARP-1 activity. Additionally, its structural flexibility contributes to a dynamic interaction profile, influencing the enzyme's conformational states and potentially modulating downstream signaling pathways.

Veliparib

912444-00-9sc-394457A
sc-394457
sc-394457B
5 mg
10 mg
50 mg
$182.00
$275.00
$726.00
3
(0)

Veliparib functions as a PARP-1 inhibitor by engaging in hydrogen bonding and hydrophobic interactions with key amino acid residues within the enzyme's active site. Its unique structural features allow for a high degree of specificity, facilitating a robust inhibition mechanism. The compound's kinetic profile reveals a rapid association and dissociation rate, which may influence the enzyme's catalytic efficiency and alter the dynamics of DNA repair pathways.

Paraxanthine

611-59-6sc-212526A
sc-212526B
sc-212526
sc-212526C
sc-212526D
sc-212526E
25 mg
50 mg
100 mg
250 mg
500 mg
1 g
$183.00
$247.00
$339.00
$693.00
$1169.00
$2035.00
2
(1)

Paraxanthine acts as a PARP-1 inhibitor through its ability to form stable complexes with the enzyme, primarily via π-π stacking and van der Waals interactions. This compound exhibits a unique conformational flexibility that enhances its binding affinity, allowing it to effectively disrupt the enzyme's function. Its reaction kinetics indicate a moderate inhibition rate, which can modulate the cellular response to DNA damage, impacting repair mechanisms at a molecular level.