Emtricitabine Impurity 20Emtricitabine IP Impurity BEmtricitabine EP Impurity BEmtricitabine System Suitability Mixture A (Emtricitabine2(1H)-Pyrimidinone, 4-amino-5-fluoro-1-[(2R,5R)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]-Emtricitabine impurity 2/5-epi Emtricitabine/4-amino-5 fluoro-1-[(2R,5R)-2-hydroxymethyl)-1,3-oxathiolane-5-yl]pyrimidin-2(1H)-one
使用5-epi Emtricitabine is an epimer of Emtricitabine (E525000), a nucleoside reverse transcriptase inhibitor approved for treatment of human immunodeficiency virus (HIV) 1, and also has antagonistic activity against the hepatitis B virus. 5-epi Emtricitabine is also used as a reagent for the synthesis of β-L-(2R,5S)- and α-L-(2R,5R)-1,3-oxathiolane-pyrimidine and -purine nucleosides as potential HIV agents.