ATM/ATR are members of the PI3 family of serine-threonine kinases and function as essential links between the sensors and effectors of the DNA damage response. The roles of ATM and ATR partially overlap and are cooperative; however they are also known to play distinct roles in protecting the cell from DNA damage. ATM is mostly responsible for sending signals from DSBs (double-strand breaks) induced by ionizing radiation while the closely related ATR responds to UV damage or stalled replication forks. ATM and ATR are known to phosphorylate common as well as specific substrates to activate checkpoint signaling. The G1, S, and G2 cell cycle checkpoints are primarily regulated by the ATM (ataxia telangiectasia, mutated) and ATR (ATM and Rad3-related) protein kinases.


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ATR-IN-10

ATR-IN-10 is a potent and highly selective inhibitor of ataxia telangiectasia mutated and Rad3-Related (ATR) kinase with an IC50 value of 2.978 μM.

  • CAS Number: 2713577-93-4
  • MF: C27H24N4O
  • MW: 420.51
  • Catalog: ATM/ATR
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Elimusertib (BAY-1895344) hydrochloride

BAY-1895344 is a potent, orally available and selective ATR inhibitor, with IC50 of 7 nM. Anti-tumor activity[1].

  • CAS Number: 1876467-74-1
  • MF: C20H22ClN7O
  • MW: 411.89
  • Catalog: ATM/ATR
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Camonsertib

ATR inhibitor 4 (compound 121) is a potent ATR inhibitor. ATR inhibitor 4 has antitumor activity[1].

  • CAS Number: 2417489-10-0
  • MF: C21H26N6O3
  • MW: 410.47
  • Catalog: ATM/ATR
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

(S)-Ceralasertib

(S)-Ceralasertib is extracted from patent WO2011154737A1, Compound II, exhibits an IC50 of 2.578 nM[1].(S)-Ceralasertib is a potent and selective sulfoximine morpholinopyrimidine ATR inhibitor with excellent preclinical physicochemical and pharmacokinetic (PK) characteristics.(S)-Ceralasertib is developed improving aqueous solubility and eliminates CYP3A4 time-dependent inhibition[2].

  • CAS Number: 1352226-87-9
  • MF: C20H24N6O2S
  • MW: 412.51
  • Catalog: ATM/ATR
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

VX-803 (M4344)

ATR inhibitor 2 is an ATP-competitive, orally active, and selective ATR inhibitor, with a Ki of <150 pM. ATR inhibitor 2 potently inhibits ATR-driven phosphorylated checkpoint kinase-1 (Chk1) phosphorylation with an IC50 of 8 nM. Antitumor activity[1][2].

  • CAS Number: 1613191-99-3
  • MF: C25H29F2N9O3
  • MW: 541.55
  • Catalog: ATM/ATR
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

ATR-IN-4

ATR-IN-4 is a potent ATR (Ataxia telangiectasia mutated gene Rad 3-associated kinase) inhibitor. ATR-IN-4 inhibits growth of human prostate cancer cells DU145 and human lung cancer cells NCI-H460 with IC50s of 130.9 nM and 41 .33 nM, respectively. (Patent CN112142744A, compound 13)[1].

  • CAS Number: 2574545-45-0
  • MF: C18H20N8O
  • MW: 364.40
  • Catalog: ATM/ATR
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Ro 90-7501

Ro 90-7501 is an amyloid β42 (Aβ42) fibril assembly inhibitor that reduces Aβ42-induced cytotoxicity (EC50 of 2 μM). Ro 90-7501 inhibits ATM phosphorylation and DNA repair. RO 90-7501 selectively enhances toll-like receptor 3 (TLR3) and RIG-I-like receptor (RLR) ligand-induced IFN-β gene expression and antiviral response[2]. Ro 90-7501 also inhibits protein phosphatase 5 (PP5) in a TPR-dependent manner[3]. Ro 90-7501 has significant radiosensitizing effects on cervical cancer cells[4].

  • CAS Number: 293762-45-5
  • MF: C20H16N6
  • MW: 340.38100
  • Catalog: Apoptosis
  • Density: 1.443g/cm3
  • Boiling Point: 751.035ºC at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 449.122ºC

ETP-46464

ETP-46464 is an effective mTOR and ATR inhibitor with IC50s of 0.6 and 14 nM, respectively.

  • CAS Number: 1345675-02-6
  • MF: C30H22N4O2
  • MW: 470.521
  • Catalog: ATM/ATR
  • Density: 1.3±0.1 g/cm3
  • Boiling Point: 709.3±60.0 °C at 760 mmHg
  • Melting Point: N/A
  • Flash Point: 382.7±32.9 °C

ATM Inhibitor-1

ATM Inhibitor-1 is a highly potent, selective and orally active ATM inhibitor, with an IC50 of 0.7 nM, shows weak activity against mTOR (IC50, 21 μM), DNAPK (IC50, 2.8 μM), PI3Kα (IC50, 3.8 μM), PI3Kβ (IC50, 10.3 μM), PI3Kγ (IC50, 3 μM) and PI3Kδ (IC50, 0.73 μM). ATM Inhibitor-1 exhibits anti-tumor activity[1].

  • CAS Number: 2135639-94-8
  • MF: C27H36N6O3
  • MW: 492.61
  • Catalog: ATM/ATR
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

ATR-IN-18

ATR-IN-18 (compound 2) is an orally active and potent ATR kinase inhibitor, with an IC50 of 0.69 nM. ATR-IN-18 shows antiproliferative activity in LoVo cells, with an IC50 of 37.34 nM. ATR-IN-18 has anti-tumor activity[1].

  • CAS Number: 2766407-55-8
  • MF: C19H22F3N7O5S
  • MW: 517.48
  • Catalog: ATM/ATR
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

AZ31

AZ31 is a a potent, highly selective, and orally active ATM inhibitor with an IC50 of <1.2 nM for ATM enzyme, and an IC50 of 46 nM for ATM in cell. AZ31 shows excellent selectivity over ATR (>500-fold) and excellent PIKK-family selectivity and pan-kinase selectivity. AZ31 is a potent radiosensitizer in vitro, it can be used for the research of cancer[1].

  • CAS Number: 2088113-98-6
  • MF: C24H28N4O3
  • MW: 420.50412
  • Catalog: ATM/ATR
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

ATR-IN-5

ATR-IN-5 is a potent inhibitor of ATR. ATR is a class of protein kinases involved in genome stability and DNA damage repair, and is a member of the PIKK family. ATR-IN-5 has the potential for the research of ATR kinase-mediated diseases such as proliferative diseases and cancer (extracted from patent CN112047938A, compound D24)[1].

  • CAS Number: 2601571-19-9
  • MF: C27H32F3N9O
  • MW: 555.60
  • Catalog: ATM/ATR
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

ATR-IN-22

ATR-IN-22 (Compound 34) is an orally active ATR inhibitor. ATR-IN-22 inhibits MIAPaCa-2 proliferation (IC50 <1 μM). ATR-IN-22 shows anti-tumor activity in colon cancer[1].

  • CAS Number: 2905312-07-2
  • MF: C25H31N7O
  • MW: 445.56
  • Catalog: ATM/ATR
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

ATR-IN-8

ATR-IN-8 is a potent inhibitor of ATR. ATR is a key enzyme in the homologous recombination repair pathway and belongs to the PIKK family. ATR-IN-8 has the potential for the research of cancer diseases (extracted from patent WO2021143821A1, compound 3)[1].

  • CAS Number: 2672511-20-3
  • MF: C20H22N6O2S
  • MW: 410.49
  • Catalog: ATM/ATR
  • Density: N/A
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

Ceralasertib(AZD6738)

AZD6738 is a potent inhibitor of ATR kinase with an IC50 of 1 nM.

  • CAS Number: 1352226-88-0
  • MF: C20H24N6O2S
  • MW: 412.509
  • Catalog: ATM/ATR
  • Density: 1.5±0.1 g/cm3
  • Boiling Point: N/A
  • Melting Point: N/A
  • Flash Point: N/A

NU6027

NU6027 is a potent and ATP-competitive inhibitor of both CDK1 and CDK2, with Kis of 2.5 µM and 1.3 µM, respectively. NU6027 is also a potent inhibitor of ATR and enhances hydroxyurea and cisplatin cytotoxicity in an ATR-dependent manner[1][2].

  • CAS Number: 220036-08-8
  • MF: C11H17N5O2
  • MW: 251.285
  • Catalog: ATM/ATR
  • Density: 1.5±0.1 g/cm3
  • Boiling Point: 549.2±60.0 °C at 760 mmHg
  • Melting Point: 252.5-253.7 °C(lit.)
  • Flash Point: 286.0±32.9 °C