Montelukast EP Impurity B;Montelukast USP RC F;Montelukast Methylstyrene ; Dehydro Montelukast ; Styrene Montelukast

Montelukast EP Impurity B;Montelukast USP RC F;Montelukast Methylstyrene ; Dehydro Montelukast ; Styrene Montelukast

[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

Impurity reference standard used for related substances testing of Montelukast Acid drug substance and drug product per pharmacopoeial limits.