BioCryst Pharmaceuticals, Inc. (BioCryst) is a biotechnology company. The Company designs, optimizes and develops small molecule drugs that block enzymes involved in the pathogenesis of diseases. The Company focuses on the treatment rare diseases. The Company uses X-ray crystallography, computer modeling of molecular structures and advanced chemistry techniques to focus on the three-dimensional molecular structure and active site characteristics of the enzymes that control cellular biology. Its products include RAPIVAB, BCX4161, BCX7353 and other second generation HAE compounds, BCX4430 and Forodesine. Peramivir is an intravenous neuraminidase inhibitor approved in multiple countries for the treatment of patients with influenza, in the United States as RAPIVAB, in Japan as RAPIACTA and in Korea as PERAMIFLU. BCX4161 is the Company’s Hereditary Angioedema (HAE) product candidate. BCX7353 is a plasma kallikrein inhibitor. Forodesine is a Purine Nucleoside Phosphorylase (PNP) inhibitor.