chk 1

CHK1-IN-3 is an inhibitor of checkpoint kinase 1 (CHK1; IC50: 0.4 nM).

CHK-IN-1 is a dual inhibitor of CHK1 and CHK2 with antiproliferative activity.

CHK1-IN-2 is an inhibitor of checkpoint kinase 1 (CHK1; IC50: 6 nM).

CHK1-IN-4 is a potent inhibitor of checkpoint kinase 1 (chk1) and potently inhibits chk1 phosphorylation in the tumor cells with anti-tumor activity.

Chk1-IN-5 is a highly effective inhibitor of checkpoint kinase 1 (Chk1), which hinders the phosphorylation of Chk1 and effectively suppresses tumor growth in a colon cancer xenograft model[1].

Chk1-IN-6 is a potent, selective, and orally bioavailable [CHK1] inhibitor candidate.

Compound 18, also known as FLT3/CHK-IN-1, is a dual inhibitor targeting FLT3 and CHK1, exhibiting over 1700-fold selectivity towards c-KIT and significantly diminishing hERG affinity, with an IC50 of 58.4 μM. It demonstrates efficacy in suppressing tumor growth in mouse xenotransplantation models implanted with MV-4-11 cells [1].

CHK1-IN-12 (Compound example 1-5) is a highly selective and orally active checkpoint kinase 1 (CHK1) inhibitor, demonstrating an in vitro enzyme IC50 of ≤10 nM and a cellular IC50 of ≤50 nM. This compound suppresses the phosphorylation activity of CHK1 kinase, disrupts DNA damage response pathways, and induces tumor cell cycle arrest and apoptosis. CHK1-IN-12 shows promise for cancer research applications.

CHK1-IN-11 (Compound 1) is an orally active inhibitor of checkpoint kinase 1 (CHK1). It is utilized in research focused on cancers with oncogene amplification.

FLT3/CHK1-IN-2 (Compound 30) is a dual inhibitor targeting FLT3 and CHK1, with IC50 values of 25.63 nM for CHK1, 16.39 nM for FLT3-WT, and 22.80 nM for FLT-D835Y. It displays favorable oral pharmacokinetic properties and kinase selectivity. FLT3/CHK1-IN-2 is applicable in acute myeloid leukemia (AML) research.

CHK1-IN-9 (compound 11) is an orally active CHK1 inhibitor with an IC50 of 0.55 nM. It enhances the effects of DNA-damaging agents on tumor cells and exhibits synergistic anticancer activity with Gemcitabine.

CHK1-IN-13 (Compound 38) is an inhibitor of checkpoint kinase 1 (Chk1) with an IC50 ranging from 10 to 50 nM. It exhibits antitumor activity and can be utilized in research studies focused on cancers such as breast, ovarian, and prostate cancer.

CHK1-IN-8 (example 3-2) is an inhibitor of Chk1, exhibiting an IC50 of less than 10 nM against human Chk1. It is applicable for cancer research.

Compound PROTAC-2, also known as PROTAC Chk1 degrader-1, is a potent degrader of Chk1, exhibiting a DC50 of 1.33 μM. It is utilized in cancer research [1].

Prexasertib (LY2606368) is a selective checkpoint kinase 1 (CHK1) inhibitor (Ki 0.9 nM, IC50<1 nM). Prexasertib causes double-stranded DNA breaks and replication mutations, leading to apoptosis. Prexasertib has antitumor activity.

CCT241533 is an effective and selective ATP competitive inhibitor of CHK2 (Ki: 1.16 nM; IC50: 3 nM).

MBM-55S is an effective inhibitor of Nek2 with an IC50 of 1 nM. MBM-55S indecus cell cycle arrest and apoptosis thereby inhibiting the proliferation of cancer cells. MBM-55S shows antitumor activities.

Tuvusertib (M1774) is an orally available ataxia telangiectasia and Rad3-related (ATR) kinase inhibitor (Ki< 1 µΜ) with selective and potentially antitumor activity.Tuvusertib selectively inhibits ATR activity and blocks downstream phosphorylation of serine/threonine protein kinase checkpoint kinase 1 (CHK1), thereby inhibits DNA damage checkpoint activation, disrupting DNA damage repair and inducing apoptosis in tumor cells.

CCT241533 hydrochloride is an effective and selective ATP competitive inhibitor of CHK2 (Ki: 1.16 nM; IC50: 3 nM).

MBM-55 is an effective inhibitor of NIMA related kinase 2 (NEK2) with an IC50 of 1 nM. MBM-55 effectively inhibits the proliferation of cancer cells by inducing cell cycle arrest and apoptosis.

A-443654, a pan-Akt inhibitor, exhibits equal potency against Akt1, Akt2, and Akt3 within cells (Ki=160 pM).

CCT244747 is a potent and highly selective CHK1 inhibitor that is orally active, ATP-competitive, and cytotoxic, abrogating drug-induced S and G2 blockade and inducing apoptosis in multiple tumor cell lines.

MRT00033659 is an effective broad-spectrum kinase inhibitor of CK1 (IC50=0.9 µM for CK1δ) and CHK1 (IC50=0.23 µM). MRT00033659 is a pyrazolo-pyridine analogue. It also induces p53 pathway activation and E2F-1 destabilization.

PD 407824 is a chemical BMP sensitiser that promotes increased cellular sensitivity to subthreshold amounts of BMP4.PD 407824 is a potent inhibitor of the checkpoint kinases Chk1 and WEE1 (IC50s: 47 and 97 nM, respectively).