hae-1

Remdesivir de(ethylbutyl 2-aminopropanoate) is a recognized impurity in Remdesivir, a nucleoside analog demonstrating potent antiviral efficacy. It exhibits EC50 values of 74 nM against SARS-CoV and MERS-CoV in human airway epithelial (HAE) cells, and 30 nM against murine hepatitis virus in delayed brain tumor cells. Notably effective in vitro against SARS-CoV-2 (COVID-19) infection, Remdesivir has garnered attention for its application in controlling the spread of the virus, as supported by references [1] [2].

Berotralstat (BCX7353) is a second-generation, synthetic, and orally active plasma kallikrein inhibitor with low toxicity. It is highly specific and effectively used in the research of hereditary angioedema (HAE) attacks. Berotralstat functions by inhibiting the enzymatic activity of plasma kallikrein, which is responsible for the release of bradykinin. This blocking mechanism targets the major biologic peptide involved in the promotion of swelling and pain associated with HAE attacks[1][2].