Montelukast EP Impurity A

(-) Montelukast sodium Isomer;|(S,E)-2-(1-(((1-(3-(2-(7-Chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propyl)thio)methyl)cyclopropyl)acetic acid, sodium (1:1)|1-[[[(1S)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]cyclopropaneacetic acid sodium salt|CS-O-11855;CS-O-05826;CS-T-82793|ent-Montelukast Sodium Salt ;|Montelukast EP Impurity A (Sodium Salt) ; Montelukast Sodium (S)-Isomer ; ent-Montelukast Sodium Salt ; 1-[[[(1S)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phe|Montelukast Sodium (S)-Isomer|S-Montelukast Na;|S-motelukast isomer;|sodium 2-[1-({[(1S)-1-{3-[(E)-2-(7-chloroquinolin-2- yl)ethenyl]phenyl}-3-[2-(2-hydroxypropan-2- yl)phenyl]propyl]sulfanyl}methyl)cyclopropyl]acetate