Synonyms: Cyclopropaneacetic acid, 1-[[[(1R)-1-[3-[(1Z)-2-(7-chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]-, 1-[[[(1R)-1-[3-[(1Z)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]-cyclopropaneacetic acid, Montelukast Sodium Imp. G (EP), cis-Montelukast, (Z)-Montelukast