Irreversible

PF-06459988 is a novel, effective, orally active, irreversible, and selective epidermal growth factor receptor (EGFR) mutant inhibitor. PF-06459988 has high efficiency and high affinity for EGFRs double mutants containing T790M, and has minimal activity against WT EGFR. PF-06459988 makes a candidate drug for the treatment of cancer.

4-Diethylaminobenzaldehyde, a reversible aldehyde dehydrogenase (ALDH) inhibitor (Ki: 4 nM for ALDH1), exhibits a potent anti-androgenic effect (IC50: 1.71 μM).

Fenclonine (CP-10188) is a selective and irreversible inhibitor of tryptophan hydroxylase, a rate-limiting enzyme in the biosynthesis of serotonin (5-HYDROXYTRYPTAMINE). Fenclonine(CP-10188) acts pharmacologically to deplete endogenous levels of serotonin.

Acalabrutinib (ACP-196), also known as ACP-196, is an orally available inhibitor of Bruton's tyrosine kinase (BTK) with potential antineoplastic activity. Upon administration, ACP-196 inhibits the activity of BTK and prevents the activation of the B-cell antigen receptor (BCR) signaling pathway. This prevents both B-cell activation and BTK-mediated activation of downstream survival pathways. This leads to an inhibition of the growth of malignant B cells that overexpress BTK. BTK, a member of the src-related BTK/Tec family of cytoplasmic tyrosine kinases, is overexpressed in B-cell malignancies; it plays an important role in B lymphocyte development, activation, signaling, proliferation and survival.

Sulbactam sodium (CP-45899-2) (Unasyn) is an irreversible β-lactamase inhibitor.

Allitinib (AST-1306) (AST-1306) has anti-cancer activity,and it is an irreversible EGFR and ErbB2 inhibitor with IC50s of 0.5 and 3 nM, respectively. [1]

MRTX-1257 is a selective, irreversible, and covalent inhibitor of KRAS G12C with an IC50 of 900 pM for KRAS-dependent ERK phosphorylation in H358 cells. MRTX-1257 demonstrated 31% bioavailability in the mouse, with free fraction exposures well above cellular potency, and 77% target engagement in a PK/PD experiment.

Sulbactam (CP45899) is a semi-synthetic beta-lactamase inhibitor. The beta-lactam ring of sulbactam irreversibly binds to beta-lactamase at or near its active site, thereby blocking enzyme activity and preventing metabolism of other beta-lactam antibiotics by the enzyme. Combining this agent with a beta-lactamase susceptible antibiotic, such as penicillins or a cephalosporin, to treat infections caused by beta-lactamase producing organisms, results in a decreased turnover rate of the beta-lactamase sensitive antibiotic and enhances its antibacterial activity.

Wiskostatin is a selective inhibitor of N-WASP, a ubiquitously expressed member of the Wiskott-Aldrich Syndrome protein (WASp) family that regulates actin polymerization.

YKL-5-124, a potent, selective and covalent CDK7 inhibitor with an IC50 of 9.7 nM, 1300 nM and 3020 nM for CDK7/Mat1/CycH, CDK2 and CDK9 respectively, displays biochemical and cellular selectivity for CDK7 over CDK12/13.

IPI-9119 is an orally active, selective, and irreversible FASN inhibitor (IC50 = 0.3 nM).

Oritinib (SH-1028) is an inhibitor of EGFR with IC50s of 18, 0.7, 4, 0.1, 1.4 and 0.89 nM for EGFR (wt), EGFR (L858R), EGFR (L861Q), EGFR (L858R T790M), EGFR (d746-750), EGFR (d746-750 T790M), respectively. Oritinib can be used in studies about the treatment of non-small cell lung cancer.

Almonertinib mesylate is an irreversible inhibitor of EGFR tyrosine kinase with high selectivity for EGFR-sensitizing and T790M resistance mutations. Almonertinib mesylate can be used in the non-small cell lung cancer studies.

Q-VD-OPh is an irreversible caspase inhibitor with an IC50 value of 48 nM against caspase-7 and between 25 and 400 nM against caspase-1, 3, 8, 9, 10, 12. Q-VD-OPh inhibits HIV infection and can cross the blood-brain barrier.

Ibrutinib (PCI-32765) is an irreversible inhibitor of BTK (IC50: 0.5 nM) that selectively blocks B cell activation.

Osimertinib (AZD-9291) is an EGFR third-generation inhibitor that inhibits the T790M resistance mutation produced by second-generation EGFR inhibitors with irreversible and oral activity. Osimertinib has antitumor activity for the treatment of EGFR-mutated non-small-cell lung cancer.

JNK-IN-8 (JNK Inhibitor XVI) is an irreversible JNK1/2/4 inhibitor (IC50: 4.7/18.7/1 nM) with over 10-fold selectivity compared to MNK2 and Fms, and no inhibition of Met, c-Kit, or PDGFRβ in the A375 cell line.

Etomoxir is an irreversible inhibitor of carnitine palmitoyltransferase 1a (CPT-1a) (IC50=5-20 nM). Etomoxir inhibits fatty acid oxidation by inhibiting CPT-1a, inhibits palmitate oxidation, has an inhibitory effect on adenine nucleotide translocase, and can inhibit macrophage polarization by disrupting CoA homeostasis.

Z-VAD(OMe)-FMK is a pan-caspase inhibitor with irreversible properties; Z-VAD(OMe)-FMK is also an inhibitor of ubiquitin C terminal hydrolase L1 (UCHL1), which is irreversibly modified by targeting the UCHL1 active site.

Diphenyleneiodonium chloride (DPI)(DPI) is an irreversible inhibitor of iNOS and eNOS (IC50 values of 50 nM and 0.3 μM, respectively),and displays broad-spectrum bactericidal activity.

Bomedemstat (IMG-7289), an orally active and irreversible lysine-specific demethylase 1 (LSD1) inhibitor, shows activity in mouse myeloproliferative neoplasm (MPN) models. This compound exhibits antineoplastic effects and can be used for acute myeloid leukemia (AML) and myelofibrosis (MF) research.

6RK73 is a covalent, irreversible, and specific UCHL1 inhibitor (IC50: 0.23 µM) with almost no inhibition of UCHL3 (IC50: 236 µM).

CHMFL-EGFR-202 is a potent, irreversible inhibitor of EGFR mutant kinase with IC50 values of 5.3 nM for drug-resistant mutant EGFR T790M and 8.3 nM for WT EGFR kinases.

Corin is an irreversible inhibitor of HDAC1(IC50 = 147 nM) and LSD1(Ki = 110 nM).