cis-MontelukastMontelukast IMP [1-[[[(1R)-1-[3-[(Z)-2-(7-Chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(2-hydroxypropan-2-yl) phenyl]propyl]sulfanyl]methyl]cyclopropyl]acetic Acid

Montelukast Methylstyrene (Styrene Montelukast)Montelukast IMP [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

Montelukast SulfoxideMontelukast IMP [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

(R,R)-Montelukast Bis-sulfideMontelukast IMP 1-[[[(1R)-1-[3-[(1R)-1-[[[1-(Carboxymethyl)cyclopropyl]methyl]thio]-2-(7-chloro-2-quinolinyl)ethyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl) phenyl] propyl] thio]methyl]-cyclopropaneacetic Acid

Modafinil Carboxylate Methyl EsterModafinil IMP 2-[(Diphenylmethyl)sulfinyl]acetic Acid Methyl Ester

(S)-Modafinil (CIV)Modafinil IMP 2-[(S)-(Diphenylmethyl)sulfinyl]acetamide

Montelukast Sodium (S)-IsomerMontelukast IMP 1-[[[(1S)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]cyclopropaneacetic Acid sodium sal

Metoprolol AcidMetoprolol IMP ((+/-)4-[2-Hydroxy-3-(1-methylethyl)aminopropoxy]benzaldehyde hydrochloride)

Metoprolol DimerMetoprolol IMP ((+/-)N,N-bis-[2-hydroxy-3-[4-(2-methoxyethyl)phenoxy]propyl](1-methylethyl)amine hydrochloride)

Metoprolol Succinate Secondary StandardMetoprolol API (±)-1-[4-(2-Methoxyethyl)phenoxy]-3-[(1-methylethyl)amino]-2-propanol Butanedioate