A monocyclic beta-lactam antibiotic originally isolated from Chromobacterium violaceum. It is resistant to beta-lactamases and is used in gram-negative infections, especially of the meninges, bladder, and kidneys. It may cause a superinfection with gram-positive organisms.

Synonyms: 0, Az threonam, Az-threonam, Azthreonam, SQ26,776, Propanoic acid, 2-(((1-(2-amino-4-thiazolyl)-2-((2-methyl-4-oxo-1-sulfo-3-azetidinyl)amino)-2-oxoethylidene)amino)oxy)-2-methyl-, (2S-(2alpha,3beta(Z)))-, SQ 26,776, Aztreonam, SQ-26,776, Azactam, G2B4VE5GH8, Urobactam