MTL01: Montelukast (Acid) [ CAS # 158966-92-8 ]
MTL02: Montelukast Sodium [ CAS # 151767-02-1 ]

MTL03: 2-(2-(3S-(2-(7-chloro-2-quinolinyl)- ethenyl-phenyl)-3-hydroxy-propyl)phenyl)-2-propanol [ CAS # 142569-70-8 ]

MTL04: 3-(Mercaptomethyl)cyclopropane acetic acid [ CAS # 162515-68-6 ]

MTL05: 2-(3S-(2-(7-chloro-2-quinolinyl)-ethenyl-phenyl)-3-hydroxy-propyl)-1-methoxycarbonylbenzene [ CAS # 142569-69-5; 181139-72-0 ]

MTL06: 2-(3-(2-(7-chloro-2-quinolinyl)-ethenyl-phenyl)-3-oxo-propyl)-1-methoxycarbonylbenzene [ CAS # 133791-17-0; 149968-11-6 ]

MTL07: Montelukast Sulfoxide [ CAS # 909849-96-3 ]

Synonym: Montelukast USP RC A ; Montelukast S-Oxide

CAS Name: [1-[[[1-[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(2-hydrox-ypropan-2-yl)phenyl]propyl]sulfinyl]methyl]cyclopropyl]acetic acid.

MTL08: Montelukast Sulfone

MTL09: (1S)-Montelukast cis Isomer

Synonym: Montelukast USP RC B

CAS Name: [1-[[[(1S)-1-[3-[(Z)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(2-hydroxypropan- 2-yl)phenyl]propyl]sulfanyl]methyl]cyclopropyl]acetic acid.

MTL10: Montelukast Methylketone Impurity

Synonym: Montelukast USP RC E

CAS Name: [1-[[[(1R)-3-(2-acetylphenyl)-1-[3-[(E)-2-(7-chloroquinolin-2- yl)ethenyl]phenyl]propyl]sulfanyl]methyl]cyclopropyl]acetic acid.

MTL11: Montelukast Methylstyrene Impurity

Synonym: Montelukast USP RC F ; Anhydro Montelukast ; Dehydro Montelukast

CAS Name: [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.

MTL12: Montelukast Hydroxy Metabolite

MTL13: Montelukast Disulfide Impurity

MTL14: Montelukast Ether Impurity [CAS # 168214-67-3]