Verwenden(2S,4R)-4-[(3-Chloro-7-methoxy-2-quinoxalinyl)oxy]-,1-(1,1-dimethylethyl),- 1,2-Pyrrolidinedicarboxylic Acid 2-Methyl Ester acts as a reagent in the discovery of MK-5172 (M424985), a macrocyclic analog as an antiviral protease inhibitor. Reagent in the discovery of quinoxaline-based metathesis catalysts from the synthesis of Grazoprevir. It is a COVID19-related research product.