Telomestatin is a very potent telomerase inhibitor and can be isolated from Streptomyces anulatus 3533-SV4. Telomestatin selectively facilitates the formation of intramolecular G-quadruplexes, in particular, that produced from the human telomeric sequence d[T2AG3]4. Telomestatin is an ADC cytotoxin and can be used for cancer research.

Lometrexol hydrate (DDATHF hydrate), an antipurine antifolate, can inhibit the activity of glycinamide ribonucleotide formyltransferase (GARFT) but do not induce detectable levels of DNA strand breaks. Lometrexol hydrate can further inhibit de novo purine synthesis, causing abnormal cell proliferation and apoptosis, even cell cycle arrest. Lometrexol hydrate has anticancer activity. Lometrexol hydrate also is a potent human Serine hydroxymethyltransferase1/2 (hSHMT1/2) inhibitor.

MK-28 is a potent and selective PERK activator. MK-28 exhibits remarkable pharmacokinetic properties and high BBB penetration in mice.

6-Azathymine, a 6-nitrogen analog of thymine, is a potent D-3-aminoisobutyrate-pyruvate aminotransferase inhibitor. 6-Azathymine inhibits the biosynthesis of DNA, and has antibacterial and antiviral activities.

3'-Deoxyuridine-5'-triphosphate (3'-dUTP) is a nucleotide analogue that inhibits DNA-dependent RNA polymerases I and II. 3'-Deoxyuridine-5'-triphosphate strongly and competitively inhibits the incorporations of UTP into RNA with a Ki value of 2.0 μM.

Bendamustine (SDX-105 free base), a purine analogue, is a DNA cross-linking agent. Bendamustine activates DNA-damage stress response and apoptosis. Bendamustine has potent alkylating, anticancer and antimetabolite properties.

AV-153 free base, a 1,4-dihydropyridine (1,4-DHP) derivative, is an antimutagenic. AV-153 free base intercalates to DNA in a single strand break and reduces DNA damage, stimulates DNA repair in human cells in vitro. AV-153 free base interacts with thymine and cytosine and has an influence on poly(ADP)ribosylation. AV-153 free base has anti-cancer activity.

AV-153, a 1,4-dihydropyridine (1,4-DHP) derivative, is an antimutagenic. AV-153 intercalates to DNA in a single strand break and reduces DNA damage, stimulates DNA repair in human cells in vitro. AV-153 interacts with thymine and cytosine and has an influence on poly(ADP)ribosylation. AV-153 has anti-cancer activity.

Methotrexate α-tert-butyl ester, capped by OtBu, significantly reduces tumor growth in HT1080 tumor bearing mice. Methotrexate is an antimetabolite and antifolate agent and is also an immunosuppressant and antineoplastic agent.

Bromochloroacetonitrile is a by-product of the chlorine disinfection of water containing natural organic material. Bromochloroacetonitrile possesses direct acting mutagenic activity and is capable of inducing DNA strand breakage.

Chk1-IN-5 is a potent checkpoint kinase 1 (Chk1) inhibitor. Chk1-IN-5 inhibits Chk1 phosphorylation and inhibits tumor growth in colon cancer xenograft model.

SP-96 is a?highly potent, selective and non-ATP-competitive Aurora B (IC50=0.316 nM) inhibitor and shows >2000 fold selectivity against FLT3 and KIT. SP-96 shows selective growth inhibition in NCI60 screening, incluing MDA-MD-468 (GI50=107 nM). SP-96 can be used for the research of triple negative breast cancer (TNBC).

ε-Amanitin, a cyclic peptide isolated from a variety of mushroom species, potently binds to and inhibits the activity of RNA polymerase II.

Fluorescein-NAD+ is an alternative to radiolabeled NAD and a substrate for ADP-ribosylation. Fluorescein-NAD+ can be used in PARP assays by fluorescence microscopy. Extinction Coefficient: 262 nm.

Duocarmycin DM, a DNA minor-groove alkylator, is an antibody drug conjugates (ADCs) toxin. Duocarmycin DM is based on its characteristic curved indole structure and a spirocyclopropylcyclohexadienone electrophile to act anticancer activity.

RI(dl)-2 TFA is a potent and selective RAD51-mediated D-loop formation inhibitor with an IC50 of 11.1 μM. RI(dl)-2 TFA does not influence RAD51 binding to ssDNA and inhibits homologous recombination (HR) activity in human cells (IC50 of 3.0 μM).

GS-443902 (GS-441524 triphosphate) is a potent viral RNA-dependent RNA-polymerases (RdRp) inhibitor with IC50s of 1.1 μM, 5 μM for RSV RdRp and HCV RdRp, respectively. GS-443902 is the active triphosphate metabolite of Remdesivir.

T-2513 is a selective topoisomerase I inhibitor. T-2513 binds covalently to and stabilizes the topoisomerase I-DNA complex and inhibits DNA replication and RNA synthesis, ultimately leading to cell death.

Tripolin A ((E)-Tripolin A) is a specific non-ATP competitive Aurora A kinase inhibitor, with IC50 values of 1.5 μM and 7 μM for Aurora A and Aurora B, respectively.

Adenosine Dialdehyde, a purine nucleoside analogue, is an irreversible inhibitor of S-adenosylhomocysteine hydrolase (SAH) (IC50=40 nM). Adenosine Dialdehyde exhibits potent anti-tumor activity in vivo and can be used for the cancer research.

Riddelline, a pyrrolizidine alkaloid, is a potent genotoxic agent. Riddelline induces significant elevations in unscheduled DNA synthesis and S-phase synthesis in rat liver.

3-Methoxybenzamide (3-MBA), an inhibitor of ADP-ribosyltransferase (ADPRTs) and PARP, inhibits cell division in Bacillus subtilis, leading to filamentation and eventually lysis of cells. 3-Methoxybenzamide (3-MBA) enhances in vitro plant growth, microtuberization, and transformation efficiency of blue potato (Solanum tuberosum L. subsp. andigenum).

Hesperadin hydrochloride is an ATP competitive indolinone inhibitor of Aurora A and B. Hesperadin hydrochloride inhibits Aurora B with an IC50 of 250 nM.

4-Hydroperoxy cyclophosphamide is the active metabolite form of the prodrug Cyclophosphamide. 4-Hydroperoxy cyclophosphamide crosslinks DNA and induces T cell apoptosis independent of death receptor activation, but activates mitochondrial death pathways through production of reactive oxygen species (ROS). 4-Hydroperoxy cyclophosphamide is used to treat lymphomas and autoimmune disorders.

Camptothecin-20(S)-O-propionate (CZ48), the C20-propionate ester of CPT, is a highly effective anticancer agent. Camptothecin-20(S)-O-propionate (CZ48) is a topoisomerase-Ι inhibitor.

EB-47 dihydrochloride, a potent and selective PARP-1/ARTD-1 inhibitor with an IC50 value of 45 nM, shows modest potency against ARTD5 with an IC50 value of 410 nM. EB-47 mimics the substrate NAD+?and extends from the nicotinamide to the adenosine subsite.

CH-0793076 (TP3076) TFA, a hexacyclic camptothecin analog, is active drug and major metabolite of TP300. CH-0793076 TFA inhibits DNA topoisomerase I with an IC50 of 2.3 μM. CH-0793076 TFA is efficacious against cells expressing BCRP (breast cancer resistance protein).

CH-0793076 (TP3076), a hexacyclic camptothecin analog, is active drug and major metabolite of TP300. CH-0793076 inhibits DNA topoisomerase I with an IC50 of 2.3 μM. CH-0793076 is efficacious against cells expressing BCRP (breast cancer resistance protein).

Tezacitabine is a cytostatic and cytotoxic antimetabolite and a nucleoside analogue. Tezacitabine irreversibly inhibits the ribonucleotide reductase and interferes with DNA replication and repair. Tezacitabine effectively induces cells apoptotic. Tezacitabine has the potential for leukemias and solid tumors (carcinomas) treatment.

Melflufen (Melphalan flufenamide) hydrochloride, a dipeptide prodrug of Melphalan, is an alkylating agent. Melflufen hydrochloride shows antitumor activity against multiple myeloma (MM) cells and inhibits angiogenesis. Melflufen hydrochloride induces irreversible DNA damage and cytotoxicity in MM cells.