Emtricitabine Menthyl Ester Impurity

Chemical Name: (2R,5S)-5-(4-Amino-5-fluoro-2-oxo-1,2-dihydro-1-pyrimidinyl)-1,3-oxathiolane-2-carboxylic acid (1R,2S,5R)-2-isopropyl-5-methylcyclohexyl ester

Synonym: (2R,5S)-5-(4-Amino-5-fluoro-2-oxo-1(2H)-pyrimidinyl)-1,3-oxathiolane-2-carboxylic Acid (1R,2S,5R)-5-Methyl-2-(1-methylethyl)cyclohexyl Ester