Perosphere is a private specialty pharmaceutical company focused on developing rescue medications. Perosphere employs rational drug design to invent proprietary new small molecules for targeted therapeutic indications. Perosphere selectively identifies and develops new chemical entities and other therapeutics that can be used as rescue drugs. Perosphere also identifies market opportunities where application of drug delivery technology to an already marketed drug can create a new patent-protected medical use or enhance safety, efficacy or ease of use. Perosphere recognizes the scientific and marketing opportunities afforded by its drug candidates and pursues clinical development using the U.S. FDA's 505(b)(2) regulatory pathway whenever possible. The 505(b)(2) pathway enables the expedited development of drug candidates that are based on drugs already demonstrated to be safe and effective. Perosphere's proprietary drug delivery technology is protected by over 30 issued and 10 pending patents.