Sulopenem, also known as CP-70429, is a potent beta-lactamase inhibitor.Sulopenem showed potent antibacterial activity against gram-positive and gram-negative bacteria except Pseudomonas aeruginosa and Xanthomonas maltophilia. CP-70,429 was stable to various types of beta-lactamases except for the enzyme from X. maltophilia and was 16- to 128-fold more active than the other compounds against beta-lactamase-producing strains of Enterobacter cloacae and Citrobacter freundii.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.

[1]. James A Karlowsky, et al. In Vitro Activity of Sulopenem, an Oral Penem, Against Urinary Isolates of Escherichia coli. Antimicrob Agents Chemother. 2018 Dec 21;63(1):e01832-18. [2]. M Minamimura, et al. In Vitro Antibacterial Activity and Beta-Lactamase Stability of CP-70,429 a New Penem Antibiotic. Antimicrob Agents Chemother. 1993 Jul;37(7):1547-51. [3]. M Nagashima, et al. In Vitro and in Vivo Activities of Sulopenem Compared With Those of Imipenem and Cephalosporins. Jpn J Antibiot. 1996 Apr;49(4):303-23.