EcDsbB-IN-12 (4,5-dichloro-2-[(2-chlorophenyl)methyl]pyridazin-3-one) targets disulfide bond forming enzyme,and is a novel potent specific inhibitor of EcDsbB.

NDSB-211 is a surfactant with small hydrophobic ends and mildly solubilizes proteins for protein extraction and analysis.

EcDsbB-IN-9 is a specific EcDsbB inhibitor, targeting disulfide bond forming enzyme DsbB of Gram-negative bacteria.

IC 86621 is a selective and reversible ATP-competitive inhibitor of DNA-PK with an IC50 of 120 nM. IC 86621 increases DNA double-strand break(DSB)-induced antitumor activity with an EC50 of 68 µM for DNA-PK mediated cellular DSB repair.

Pyridostatin (RR82) is a synthetic small-molecule stabilizer of G-quadruplexes, a secondary structure of DNA that usually exists in the end of the chromosome or the telomeres.

NDSB-201 is a useful organic compound for research related to life sciences. The catalog number is TF0120 and the CAS number is 15471-17-7.

NDSB-256 is a useful organic compound for research related to life sciences. The catalog number is TF0032 and the CAS number is 81239-45-4.

NDSB-195 is a useful organic compound for research related to life sciences. The catalog number is TF0078 and the CAS number is 160255-06-1.

NDSB-221 is a useful organic compound for research related to life sciences. The catalog number is TF0121 and the CAS number is 160788-56-7.

UNC3474, a small molecule ligand, selectively interacts with the aromatic methyl-lysine binding cage of the tumor protein 53BP1 Tudor domain (TT), exhibiting a dissociation constant (Kd) of 1.0±0.3 μM. It impedes 53BP1's recruitment to DNA double-strand breaks (DSBs), maintaining the protein's autoinhibited state within cells [1].

DMNB (6-Nitroveratraldehyde) is DNA-dependent protein kinase (DNA-PK) inhibitor with IC50 of 15 μM, an enzyme involved in the non-homologous end-joining (NHEJ) pathway of double-stranded DNA break (DSB) repair in human cells.

CBP-93872 is a G2 checkpoint inhibitor. CBP-93872 specifically abrogates the DNA double-stranded break (DSB)-induced G2 checkpoint through inhibiting maintenance. CBP-93872 is an inhibitor of maintenance of the DSB-specific G2 checkpoint and thus might be a strong candidate as the basis for a drug that specifically sensitizes p53-mutated cancer cells to DSB-inducing DNA damage therapy.

NHEJ Inhibitor-1 (Compound C2), a trifunctional Pt(II) complex, mitigates non-homologous end joining (NHEJ)/homologous recombination (HR)-related double strand break (DSB) repairs, combating Cisplatin resistance in non-small cell lung cancer (NSCLC). It achieves this by inhibiting the damage repair proteins Ku70 and Rad51, thus re-sensitizing tumors to Cisplatin. Additionally, this compound prompts the generation of reactive oxygen species (ROS) and reduces mitochondrial membrane potential (MMP) [1].

Simmiparib (SMOCL-9112) is a novel and potent PARP1 and PARP2 inhibitor, a derivative of Olaparib.Simmiparib induces DNA double-strand breaks (DSBs) and cell cycle arrest in homologous recombination repair (HR)-deficient cells, thereby contributing to apoptosis.Simmiparib has been used for study Parkinson's disease, Alzheimer's disease, breast cancer, and melanoma.

DiPT-4, a dual TOP1/PARP1 inhibitor, effectively induces DNA double-strand breaks (DSBs), cell cycle arrest, and apoptosis in cancer cells, with potential to circumvent drug resistance [1].

Topoisomerase II inhibitor 6 (Compound 5) is a tryptanthrin derivative. Topoisomerase II inhibitor 6 is a potent and selective topoisomerase II inhibitor. Topoisomerase II inhibitor 6 blocks the CCRF-CEM cell cycle in the G2 phase and induces DNA double-strand breaks (DSB). Topoisomerase II inhibitor 6 exhibits antiproliferative activity on different tumor cell lines. Topoisomerase II inhibitor 6 has the potential for the research of cancer diseases [1].

Amonafide L-malate is the malate salt of amonafide, an imide derivative of naphthalic acid, with potential antineoplastic activity. Amonafide intercalates into DNA and inhibits topoisomerase II, resulting in DNA double-strand breaks (DSB) and inhibition of DNA replication and RNA synthesis.

NSC 617145 (NSC617145) is an inhibitor of WRN helicase that inhibits the ATPase, but not exonuclease, activity of WRN helicase in a concentration-dependent manner.

Pyridostatin Trifluoroacetate Salt is a G-quadruplexe stabilizer with Kd of 490 nM in a cell-free assay, which targets a series of proto-oncogenes including c-kit, K-ras and Bcl-2.

Gimeracil (Gimestat) is a competitive, reversible inhibitor of dihydropyrimidine dehydrogenase.

PFM01 is an inhibitor of MRE11 endonuclease. PFM01 can regulate double-strand break repair (DSBR) by nonhomologous end-joining (NHEJ) versus homologous recombination (HR).