Not Less Than - 95%
1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-methylethenyl)phenyl]propyl]thio]methyl]cyclopropaneacetic Acid; Anhydro Montelukast; Dehydro Montelukast; Montelukast Styrene (IP); [1-[[[(1R)-1-[3-[(E)-2-(7-Chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(prop-1-en-2- yl)phenyl]propyl]sulfanyl]methyl]cyclopropyl]acetic acid; Methylstyrene Impurity; [1-[[[(1R)-1-[3-[(E)-2-(7-Chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(1-methylethenyl)phenyl]propyl]sulfanyl]methyl]cyclopropyl]acetic acid (USP); Montelukast Methylstyrene