Montelukast 1,2-Diol (Mixture of Diastereomers) ; 2-Hydroxy Montelukast

Montelukast 1,2-Diol (Mixture of Diastereomers) ; 2-Hydroxy Montelukast

1-[1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1,2-diol-2-methyl ethyl)phenyl]propyl]thio]methyl]cyclopropane acetic acid

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