Avibactam sodium (NXL-104) is a reversible β-lactamase inhibitor (IC50: 8/80/38 nM, for TEM-1/P99/KPC-2 β-lactamases).

BLI-489 hydrate is a penicillin β-lactamase inhibitor that acts on classes A and C and some class D β-lactamases.

Cephamycin C (CepC) is a nontoxic β-lactam antibiotic. CepC stands out from other cephalosporins for its greater resistance to β-lactamases.

Nitrocefin is an antibiotic. It being sensitive to hydrolysis by all lactamases produced by gram-positive and gram-negative bacteria.

ETX0282 is an orally available, broad spectrum inhibitor of class A and C β-lactamases. Entasis is developing ETX0282 in combination with cefpodoxime proxetil, an orally available cephalosporin approved for treatment of a variety of bacterial infections.

Nacubactam (OP0595 free acid) is a potent inhibitor of non-β-lactam-β-lactamase with activity against class A and class C β-lactamases.

Metallo-β-lactamase-IN-9 (Compound 23) serves as a broad-spectrum inhibitor of metallo-beta-lactamases (MBL), exhibiting inhibition constants (IC50) of 35 nM for NDM-1, 269 nM for VIM-1, and 369 nM for IMP-1 [1].

FPI-1465 is a dual inhibitor of serine-β-Lactamases and Penicillin-binding proteins (PBPs), demonstrating inhibition of PBP2 with an IC50 of 1.0 μg/mL. Additionally, it exhibits activity against β-lactamase CTX-M-15 and OXA-48, with dissociation constants (Kd) of 0.011 μM and 5.3 μM, respectively [1].

VNRX-5133 is an injectable broad-spectrum β-lactamase inhibitor. VNRX-5133 is a novel β-lactamase inhibitor with potent and selective direct inhibitory activity against both serines- and Metallo-β-lactamases.

Moxalactam sodium salt (LY-127935) is an antibiotic compound more effective against Escherichia coli and Pseudomonas aeruginosathan cephalosporins.

Tacapenem is a β-lactam class antibacterial. It exhibits broad-spectrum antibacterial activity and it is highly stable to β-lactamases.

Metallo-β-lactamase-IN-4 (compound 40) is a potent inhibitor of metallo-β-lactamases (MBL) with IC 50 values of 0.5 μM, 2.1 μM, and 3.3 μM for VIM-1, NDM-1 and IMP-7, respectively [1].

Metallo-β-lactamase-IN-8 (compound 17) is a potent, reversible and competitive broad-spectrum metallo-β-lactamases (MβLs) inhibitor with antibacterial activity. The IC50 values of Metallo-β-lactamase-IN-8 against L1, ImiS, IMP-1 and VIM-2 are 1.3 μM, 5.7 μM, 9.8 μM, and 9.9 μM, respectively [1].

Meropenem (SM 7338) is a carbapenem antibiotic with broad spectrum of activity that is administered intravenously and used for severe bacterial infections due to sensitive agents. Meropenem is a common cause of mild transient aminotransferase elevations and can rarely result in clinically apparent, cholestatic liver injury.

Ertapenem sodium (MK-826) is a new long-acting 1-β-methyl carbapenem antibiotic with a broad antibacterial spectrum including common aerobic and anaerobic bacteria and organisms with extended-spectrum β-lactamases.

ARX-1796 (AV-006), an Avibactam prodrug, is an orally bioavailable β-lactamase inhibitor. Avibactam has a spectrum of inhibition of class A and C β-lactamases, including ESBLs, AmpC and Klebsiella pneumoniae carbapenemase (KPC) enzymes.

Metallo-β-lactamase-IN-4 (compound 40) is a potent metallo-β-lactamases (MBL) inhibitor with IC 50 values of 0.1 μM for VIM-1, 1.3 μM for NDM-1 and 5.0 μM for IMP-7, respectively [1].

Metallo-β-lactamase-IN-5 (compound 5c) is a powerful inhibitor of metallo-β-lactamases (MBLs). Its inhibitory activity against MBLs NDM-1 and VIM-1 has been demonstrated. With an IC50 value of 45 μg/mL, Metallo-β-lactamase-IN-5 effectively inhibits HUVECs. Additionally, when combined with Imipenem, Metallo-β-lactamase-IN-5 exhibits synergistic antimicrobial activity [1].

Cefmenoxime hydrochloride (Cefmenoxime hemihydrochloride) is a cephalosporin antibiotic that is administered intravenously or intramuscularly. It is active against most common gram-positive and gram-negative microorganisms, is a potent inhibitor of Enterobacteriaceae, and is highly resistant to hydrolysis by beta-lactamases. The drug has a high rate of efficacy in many types of infection and to date, no severe side effects have been noted.

Meropenem trihydrate (SM 7338 trihydrate) with broad-spectrum antibacterial activity,is a carbapenem antibiotic.

Relebactam (MK-7655) is a diazabicyclooctane inhibitor with activity against a wide spectrum of β-lactamases.

Avibactam sodium salt-13C5 is the 13C labeled compound of Avibactam sodium salt. Avibactam sodium salt has a CAS number of 1192491-61-4. Avibactam is a reversible β-lactamase inhibitor (IC50: 8/80/38 nM, for TEM-1/P99/KPC-2 β-lactamases).

Metallo-β-lactamase-IN-11 (compound 5f), a potent inhibitor of Metallo-β-lactamases (MBLs), demonstrates efficacy against the bacterial metallophyllactamase CphA with an IC50 value of 45 µM. At a concentration of 10 µM, Metallo-β-lactamase-IN-11 inhibits NDM-1 by 49% and AIM-1 by 61%, indicating its potential application in research focused on countering antibiotic resistance [1].

Metallo-β-lactamase-IN-3 (compound 35) is a potent metallo-β-lactamases (MBL) inhibitor that has the potential to restore the activity of current β-lactam antibiotics and to offer an orthogonal strategy to the discovery of new antibiotics. Metallo-β-lactamase-IN-3 shows high activity against VIM-1 and NDM-1, with IC 50 of 0.6 and 1.0 μM, respectively. Metallo-β-lactamase-IN-3 does not show inhibition of IMP-7 [1].

Tazobactam (YTR-830H) is an antibacterial penicillin derivative which inhibits the action of bacterial beta-lactamases.

Ceftizoxime (Epocelin) is a cephalosporin-based, potent antibacterial agent which can be administered intravenously or by suppository. It is highly resistant to a broad spectrum of beta-lactamases and is active against a wide range of both aerobic and anaerobic gram-positive and gram-negative organisms.

WCK-4234 sodium (WCK 4234) is an inhibitor of β-lactamase can be used in studies targeting MDR infections. WCK-4234 sodium inhibits class A, C, and D β-lactamases and OXA carbapenemases.

Avibactam sodium (NXL-104) dihydrate inhibits CTX-M-15 and β-lactamase TEM-1 with IC 50 s of 5 nM and 8 nM, respectively. Avibactam sodium dihydrate is a reversible and covalent inhibitor of non-β-lactam β-lactamase [1].

Avibactam sodium hydrate (NXL-104 hydrate) is a covalent and reversible inhibitor of β-lactamase that does not contain a β-lactam core. Avibactam sodium hydrate inhibits β-lactamase CTX-M-15 and TEM-1 with IC 50 s of 5 nM and 8 nM, respectively.

Avibactam (NXL-104) free acid is a covalent and reversible inhibitor of non-β-lactam β-lactamase (IC50s: 8 nM and 5 nM for β-lactamase TEM-1 and CTX-M-15).