API
IMPURITY
CHEMICAL NAME
STRUCTURE
2
Emtricitabine

EMTRICITABINE Impurity

a) 4-Amino-5-fluoro-1-[(2R,5S)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]-2(1H)- pyrimidinone, S-oxide EMTRICITABINE Impurity
Emtricitabine

EMTRICITABINE Impurity

(2R,5S)-5-(4-amino-5-fluoro-2-oxo-2H-pyrimidin-1-yl)-[1,3]oxathiolane-2- carboxylic acid (1R,2S,5R)-methyl ester EMTRICITABINE Impurity 1
Emtricitabine

EMTRICITABINE Impurity

(5S)-5-(4-Amino-5-fluoro-2-oxo-pyrimidine-1(2H)-yl)-1,3-oxathiolane-2-carboxylic acid (emtricitabine acid) EMTRICITABINE Impurity 2
Emtricitabine

EMTRICITABINE Impurity

5-Fluoro-1-(2-(hydroxymethyl)-1,3-oxathiolane-5-yl) pyrimidine-2,4(1H, 3H)-dione. (or) 2,3'-dideoxy-5-fluoro-3'-thiouridine EMTRICITABINE Impurity 3
Emtricitabine

EMTRICITABINE Impurity

4-Amino-5-fluoro-1-[2-(hydrocymethyl)-1,3-oxathiolan-5-yl]-2(1H)-Pyrimidinone((+)(-) Cis isomer) EMTRICITABINE Impurity 4